HTML example:<\/p>
Switch theme<\/button><\/pre> JS example:<\/p> document.getElementById('theme-toggle').addEventListener('click', () => {\n document.documentElement.classList.toggle('dark');\n});<\/pre> This example will switch the dark<\/code> class to activate the corresponding topic variable.<\/p>\n You can also extend more theme classes, such as .blue-theme<\/code> , .green-theme<\/code> , and set different classes through JS to achieve multi-theme support.<\/p>\n hint:<\/p>\n\n You can use localStorage<\/code> to remember the topics selected by the user<\/li>\n Adding a transition effect during switching will be more friendly (such as fading in and out)<\/li>\n<\/ul>\n\n Details to pay attention to in actual use<\/h3>\n Some details are easily overlooked, but they can affect the experience:<\/p>\n\n Variable scope<\/strong> : Custom attributes are cascading, and children will inherit the variable value of the parent element. If you want to override, remember to check whether it is affected by other classes.<\/li>\n Fallback value<\/strong> : When using a variable, you can add a default value, such as var(--text-color, #333)<\/code> to prevent errors when the variable is undefined.<\/li>\n Performance issues<\/strong> : Frequent modification of a large number of variables may cause redrawing and rearrangement, but there will be no problems with daily use.<\/li>\n Compatibility<\/strong> : Modern browsers support CSS variables, but in old projects, you need to confirm whether the target environment supports it.<\/li>\n<\/ul>\n\n Basically that's it. Making good use of CSS custom properties can make the theme system lighter and easier to maintain without introducing complex frameworks. As long as the structure is clear and the variables are classified reasonably, it is not difficult to maintain.<\/p>"} 国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂 Community Articles Topics Q&A Learn Course Programming Dictionary Tools Library Development tools Website Source Code PHP Libraries JS special effects Website Materials Extension plug-ins AI Tools Leisure Game Download Game Tutorials English 簡體中文 English 繁體中文 日本語 ??? Melayu Fran?ais Deutsch Login singup Table of Contents Why use CSS custom properties to make themes? How to organize topic variables? How to dynamically switch topics? Details to pay attention to in actual use Home Web Front-end CSS Tutorial How to use CSS custom properties for theming tutorial How to use CSS custom properties for theming tutorial 下次還敢 Jul 12, 2025 am 03:22 AM CSS custom properties are a flexible way to implement theme switching. It abstracts colors, fonts and other styles for easy management and dynamic modification. Compared to traditional multi-CSS files or preprocessor variables, CSS variables support runtime changes, suitable for dark mode and user-defined themes. It is recommended to define default variables in :root, create classes such as .dark for different topics, and toggle class names through JS to achieve dynamic topic switching. At the same time, you can use localStorage to remember user selections. Pay attention to variable scope, fallback value, performance and compatibility issues in details. Let’s talk about the key point directly: CSS custom properties (also called CSS variables) are a very flexible and maintainable way to implement topic switching. It allows you to abstract colors, fonts, spacing, etc. in styles, making it convenient for unified management and dynamic changes. Why use CSS custom properties to make themes? The traditional approach might be to write multiple CSS files, or use a preprocessor like Sass to define variables. But these methods are less convenient to switch topics at runtime. CSS custom attributes are effective at runtime and can be dynamically modified with JavaScript, which is very suitable for functions such as "dark mode" and "user custom theme". Advantages summary: Better maintainability Supports runtime modification No dependency on preprocessor Clear structure and clear hierarchy How to organize topic variables? The recommended approach is to define the default theme variable under :root , and then create additional classes for different themes (such as .dark ), so that you can change the theme by simply switching the class name. Example: :root { --bg-color: #ffffff; --text-color: #333333; } .dark { --bg-color: #121212; --text-color: #f1f1f1; } Then apply these variables to the general style: body { background-color: var(--bg-color); color: var(--text-color); } Structural recommendations: Concentrate variables in a file or block, such as _variables.css The variables related to the topic can be grouped by modules, such as color, font, margin, etc. Use naming specifications, such as --color-primary , --spacing-medium How to dynamically switch topics? If you want the user to click the button to switch topics, you can use JS to manipulate the class name of <html> or <body> . HTML example: <button id="theme-toggle">Switch theme</button> JS example: document.getElementById('theme-toggle').addEventListener('click', () => { document.documentElement.classList.toggle('dark'); }); This example will switch the dark class to activate the corresponding topic variable. You can also extend more theme classes, such as .blue-theme , .green-theme , and set different classes through JS to achieve multi-theme support. hint: You can use localStorage to remember the topics selected by the user Adding a transition effect during switching will be more friendly (such as fading in and out) Details to pay attention to in actual use Some details are easily overlooked, but they can affect the experience: Variable scope : Custom attributes are cascading, and children will inherit the variable value of the parent element. If you want to override, remember to check whether it is affected by other classes. Fallback value : When using a variable, you can add a default value, such as var(--text-color, #333) to prevent errors when the variable is undefined. Performance issues : Frequent modification of a large number of variables may cause redrawing and rearrangement, but there will be no problems with daily use. Compatibility : Modern browsers support CSS variables, but in old projects, you need to confirm whether the target environment supports it. Basically that's it. Making good use of CSS custom properties can make the theme system lighter and easier to maintain without introducing complex frameworks. As long as the structure is clear and the variables are classified reasonably, it is not difficult to maintain.The above is the detailed content of How to use CSS custom properties for theming tutorial. For more information, please follow other related articles on the PHP Chinese website! Statement of this Website The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn Hot AI Tools Undress AI Tool Undress images for free Undresser.AI Undress AI-powered app for creating realistic nude photos AI Clothes Remover Online AI tool for removing clothes from photos. Clothoff.io AI clothes remover Video Face Swap Swap faces in any video effortlessly with our completely free AI face swap tool! Show More Hot Article How to fix KB5060999 fails to install in Windows 11? 1 months ago By DDD Oguri Cap Build Guide | A Pretty Derby Musume 1 weeks ago By Jack chen Guide: Stellar Blade Save File Location/Save File Lost/Not Saving 3 weeks ago By DDD Dune: Awakening - Advanced Planetologist Quest Walkthrough 3 weeks ago By Jack chen Date Everything: Dirk And Harper Relationship Guide 3 weeks ago By Jack chen Show More Hot Tools Notepad++7.3.1 Easy-to-use and free code editor SublimeText3 Chinese version Chinese version, very easy to use Zend Studio 13.0.1 Powerful PHP integrated development environment Dreamweaver CS6 Visual web development tools SublimeText3 Mac version God-level code editing software (SublimeText3) Show More Hot Topics Where is the login entrance for gmail email? 8522 17 Java Tutorial 1747 16 CakePHP Tutorial 1600 56 Laravel Tutorial 1542 28 PHP Tutorial 1400 31 Show More Related knowledge What is 'render-blocking CSS'? Jun 24, 2025 am 12:42 AM CSS blocks page rendering because browsers view inline and external CSS as key resources by default, especially with imported stylesheets, header large amounts of inline CSS, and unoptimized media query styles. 1. Extract critical CSS and embed it into HTML; 2. Delay loading non-critical CSS through JavaScript; 3. Use media attributes to optimize loading such as print styles; 4. Compress and merge CSS to reduce requests. It is recommended to use tools to extract key CSS, combine rel="preload" asynchronous loading, and use media delayed loading reasonably to avoid excessive splitting and complex script control. How to use Lotties in Figma Jun 14, 2025 am 10:17 AM In the following tutorial, I will show you how to create Lottie animations in Figma. We'll use two colorful designs to exmplify how you can animate in Figma, and then I'll show you how to go from Figma to Lottie animations. All you need is a free Fig Breaking Boundaries: Building a Tangram Puzzle With (S)CSS Jun 13, 2025 am 11:33 AM We put it to the test and it turns out Sass can replace JavaScript, at least when it comes to low-level logic and puzzle behavior. With nothing but maps, mixins, functions, and a whole lot of math, we managed to bring our Tangram puzzle to life, no J External vs. Internal CSS: What's the Best Approach? Jun 20, 2025 am 12:45 AM ThebestapproachforCSSdependsontheproject'sspecificneeds.Forlargerprojects,externalCSSisbetterduetomaintainabilityandreusability;forsmallerprojectsorsingle-pageapplications,internalCSSmightbemoresuitable.It'scrucialtobalanceprojectsize,performanceneed Does my CSS must be on lower case? Jun 19, 2025 am 12:29 AM No,CSSdoesnothavetobeinlowercase.However,usinglowercaseisrecommendedfor:1)Consistencyandreadability,2)Avoidingerrorsinrelatedtechnologies,3)Potentialperformancebenefits,and4)Improvedcollaborationwithinteams. CSS Case Sensitivity: Understanding What Matters Jun 20, 2025 am 12:09 AM CSSismostlycase-insensitive,butURLsandfontfamilynamesarecase-sensitive.1)Propertiesandvalueslikecolor:red;arenotcase-sensitive.2)URLsmustmatchtheserver'scase,e.g.,/images/Logo.png.3)Fontfamilynameslike'OpenSans'mustbeexact. What is Autoprefixer and how does it work? Jul 02, 2025 am 01:15 AM Autoprefixer is a tool that automatically adds vendor prefixes to CSS attributes based on the target browser scope. 1. It solves the problem of manually maintaining prefixes with errors; 2. Work through the PostCSS plug-in form, parse CSS, analyze attributes that need to be prefixed, and generate code according to configuration; 3. The usage steps include installing plug-ins, setting browserslist, and enabling them in the build process; 4. Notes include not manually adding prefixes, keeping configuration updates, prefixes not all attributes, and it is recommended to use them with the preprocessor. What are CSS counters? Jun 19, 2025 am 12:34 AM CSScounterscanautomaticallynumbersectionsandlists.1)Usecounter-resettoinitialize,counter-incrementtoincrease,andcounter()orcounters()todisplayvalues.2)CombinewithJavaScriptfordynamiccontenttoensureaccurateupdates. See all articles <span id="vozn9"></span>
JS example:<\/p>
document.getElementById('theme-toggle').addEventListener('click', () => {\n document.documentElement.classList.toggle('dark');\n});<\/pre> This example will switch the dark<\/code> class to activate the corresponding topic variable.<\/p>\n You can also extend more theme classes, such as .blue-theme<\/code> , .green-theme<\/code> , and set different classes through JS to achieve multi-theme support.<\/p>\n hint:<\/p>\n\n You can use localStorage<\/code> to remember the topics selected by the user<\/li>\n Adding a transition effect during switching will be more friendly (such as fading in and out)<\/li>\n<\/ul>\n\n Details to pay attention to in actual use<\/h3>\n Some details are easily overlooked, but they can affect the experience:<\/p>\n\n Variable scope<\/strong> : Custom attributes are cascading, and children will inherit the variable value of the parent element. If you want to override, remember to check whether it is affected by other classes.<\/li>\n Fallback value<\/strong> : When using a variable, you can add a default value, such as var(--text-color, #333)<\/code> to prevent errors when the variable is undefined.<\/li>\n Performance issues<\/strong> : Frequent modification of a large number of variables may cause redrawing and rearrangement, but there will be no problems with daily use.<\/li>\n Compatibility<\/strong> : Modern browsers support CSS variables, but in old projects, you need to confirm whether the target environment supports it.<\/li>\n<\/ul>\n\n Basically that's it. Making good use of CSS custom properties can make the theme system lighter and easier to maintain without introducing complex frameworks. As long as the structure is clear and the variables are classified reasonably, it is not difficult to maintain.<\/p>"} 国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂 Community Articles Topics Q&A Learn Course Programming Dictionary Tools Library Development tools Website Source Code PHP Libraries JS special effects Website Materials Extension plug-ins AI Tools Leisure Game Download Game Tutorials English 簡體中文 English 繁體中文 日本語 ??? Melayu Fran?ais Deutsch Login singup Table of Contents Why use CSS custom properties to make themes? How to organize topic variables? How to dynamically switch topics? Details to pay attention to in actual use Home Web Front-end CSS Tutorial How to use CSS custom properties for theming tutorial How to use CSS custom properties for theming tutorial 下次還敢 Jul 12, 2025 am 03:22 AM CSS custom properties are a flexible way to implement theme switching. It abstracts colors, fonts and other styles for easy management and dynamic modification. Compared to traditional multi-CSS files or preprocessor variables, CSS variables support runtime changes, suitable for dark mode and user-defined themes. It is recommended to define default variables in :root, create classes such as .dark for different topics, and toggle class names through JS to achieve dynamic topic switching. At the same time, you can use localStorage to remember user selections. Pay attention to variable scope, fallback value, performance and compatibility issues in details. Let’s talk about the key point directly: CSS custom properties (also called CSS variables) are a very flexible and maintainable way to implement topic switching. It allows you to abstract colors, fonts, spacing, etc. in styles, making it convenient for unified management and dynamic changes. Why use CSS custom properties to make themes? The traditional approach might be to write multiple CSS files, or use a preprocessor like Sass to define variables. But these methods are less convenient to switch topics at runtime. CSS custom attributes are effective at runtime and can be dynamically modified with JavaScript, which is very suitable for functions such as "dark mode" and "user custom theme". Advantages summary: Better maintainability Supports runtime modification No dependency on preprocessor Clear structure and clear hierarchy How to organize topic variables? The recommended approach is to define the default theme variable under :root , and then create additional classes for different themes (such as .dark ), so that you can change the theme by simply switching the class name. Example: :root { --bg-color: #ffffff; --text-color: #333333; } .dark { --bg-color: #121212; --text-color: #f1f1f1; } Then apply these variables to the general style: body { background-color: var(--bg-color); color: var(--text-color); } Structural recommendations: Concentrate variables in a file or block, such as _variables.css The variables related to the topic can be grouped by modules, such as color, font, margin, etc. Use naming specifications, such as --color-primary , --spacing-medium How to dynamically switch topics? If you want the user to click the button to switch topics, you can use JS to manipulate the class name of <html> or <body> . HTML example: <button id="theme-toggle">Switch theme</button> JS example: document.getElementById('theme-toggle').addEventListener('click', () => { document.documentElement.classList.toggle('dark'); }); This example will switch the dark class to activate the corresponding topic variable. You can also extend more theme classes, such as .blue-theme , .green-theme , and set different classes through JS to achieve multi-theme support. hint: You can use localStorage to remember the topics selected by the user Adding a transition effect during switching will be more friendly (such as fading in and out) Details to pay attention to in actual use Some details are easily overlooked, but they can affect the experience: Variable scope : Custom attributes are cascading, and children will inherit the variable value of the parent element. If you want to override, remember to check whether it is affected by other classes. Fallback value : When using a variable, you can add a default value, such as var(--text-color, #333) to prevent errors when the variable is undefined. Performance issues : Frequent modification of a large number of variables may cause redrawing and rearrangement, but there will be no problems with daily use. Compatibility : Modern browsers support CSS variables, but in old projects, you need to confirm whether the target environment supports it. Basically that's it. Making good use of CSS custom properties can make the theme system lighter and easier to maintain without introducing complex frameworks. As long as the structure is clear and the variables are classified reasonably, it is not difficult to maintain.The above is the detailed content of How to use CSS custom properties for theming tutorial. For more information, please follow other related articles on the PHP Chinese website! Statement of this Website The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn Hot AI Tools Undress AI Tool Undress images for free Undresser.AI Undress AI-powered app for creating realistic nude photos AI Clothes Remover Online AI tool for removing clothes from photos. Clothoff.io AI clothes remover Video Face Swap Swap faces in any video effortlessly with our completely free AI face swap tool! Show More Hot Article How to fix KB5060999 fails to install in Windows 11? 1 months ago By DDD Oguri Cap Build Guide | A Pretty Derby Musume 1 weeks ago By Jack chen Guide: Stellar Blade Save File Location/Save File Lost/Not Saving 3 weeks ago By DDD Dune: Awakening - Advanced Planetologist Quest Walkthrough 3 weeks ago By Jack chen Date Everything: Dirk And Harper Relationship Guide 3 weeks ago By Jack chen Show More Hot Tools Notepad++7.3.1 Easy-to-use and free code editor SublimeText3 Chinese version Chinese version, very easy to use Zend Studio 13.0.1 Powerful PHP integrated development environment Dreamweaver CS6 Visual web development tools SublimeText3 Mac version God-level code editing software (SublimeText3) Show More Hot Topics Where is the login entrance for gmail email? 8522 17 Java Tutorial 1747 16 CakePHP Tutorial 1600 56 Laravel Tutorial 1542 28 PHP Tutorial 1400 31 Show More Related knowledge What is 'render-blocking CSS'? Jun 24, 2025 am 12:42 AM CSS blocks page rendering because browsers view inline and external CSS as key resources by default, especially with imported stylesheets, header large amounts of inline CSS, and unoptimized media query styles. 1. Extract critical CSS and embed it into HTML; 2. Delay loading non-critical CSS through JavaScript; 3. Use media attributes to optimize loading such as print styles; 4. Compress and merge CSS to reduce requests. It is recommended to use tools to extract key CSS, combine rel="preload" asynchronous loading, and use media delayed loading reasonably to avoid excessive splitting and complex script control. How to use Lotties in Figma Jun 14, 2025 am 10:17 AM In the following tutorial, I will show you how to create Lottie animations in Figma. We'll use two colorful designs to exmplify how you can animate in Figma, and then I'll show you how to go from Figma to Lottie animations. All you need is a free Fig Breaking Boundaries: Building a Tangram Puzzle With (S)CSS Jun 13, 2025 am 11:33 AM We put it to the test and it turns out Sass can replace JavaScript, at least when it comes to low-level logic and puzzle behavior. With nothing but maps, mixins, functions, and a whole lot of math, we managed to bring our Tangram puzzle to life, no J External vs. Internal CSS: What's the Best Approach? Jun 20, 2025 am 12:45 AM ThebestapproachforCSSdependsontheproject'sspecificneeds.Forlargerprojects,externalCSSisbetterduetomaintainabilityandreusability;forsmallerprojectsorsingle-pageapplications,internalCSSmightbemoresuitable.It'scrucialtobalanceprojectsize,performanceneed Does my CSS must be on lower case? Jun 19, 2025 am 12:29 AM No,CSSdoesnothavetobeinlowercase.However,usinglowercaseisrecommendedfor:1)Consistencyandreadability,2)Avoidingerrorsinrelatedtechnologies,3)Potentialperformancebenefits,and4)Improvedcollaborationwithinteams. CSS Case Sensitivity: Understanding What Matters Jun 20, 2025 am 12:09 AM CSSismostlycase-insensitive,butURLsandfontfamilynamesarecase-sensitive.1)Propertiesandvalueslikecolor:red;arenotcase-sensitive.2)URLsmustmatchtheserver'scase,e.g.,/images/Logo.png.3)Fontfamilynameslike'OpenSans'mustbeexact. What is Autoprefixer and how does it work? Jul 02, 2025 am 01:15 AM Autoprefixer is a tool that automatically adds vendor prefixes to CSS attributes based on the target browser scope. 1. It solves the problem of manually maintaining prefixes with errors; 2. Work through the PostCSS plug-in form, parse CSS, analyze attributes that need to be prefixed, and generate code according to configuration; 3. The usage steps include installing plug-ins, setting browserslist, and enabling them in the build process; 4. Notes include not manually adding prefixes, keeping configuration updates, prefixes not all attributes, and it is recommended to use them with the preprocessor. What are CSS counters? Jun 19, 2025 am 12:34 AM CSScounterscanautomaticallynumbersectionsandlists.1)Usecounter-resettoinitialize,counter-incrementtoincrease,andcounter()orcounters()todisplayvalues.2)CombinewithJavaScriptfordynamiccontenttoensureaccurateupdates. See all articles <span id="vozn9"></span>
This example will switch the dark<\/code> class to activate the corresponding topic variable.<\/p>\n You can also extend more theme classes, such as .blue-theme<\/code> , .green-theme<\/code> , and set different classes through JS to achieve multi-theme support.<\/p>\n hint:<\/p>\n\n You can use localStorage<\/code> to remember the topics selected by the user<\/li>\n Adding a transition effect during switching will be more friendly (such as fading in and out)<\/li>\n<\/ul>\n\n Details to pay attention to in actual use<\/h3>\n Some details are easily overlooked, but they can affect the experience:<\/p>\n\n Variable scope<\/strong> : Custom attributes are cascading, and children will inherit the variable value of the parent element. If you want to override, remember to check whether it is affected by other classes.<\/li>\n Fallback value<\/strong> : When using a variable, you can add a default value, such as var(--text-color, #333)<\/code> to prevent errors when the variable is undefined.<\/li>\n Performance issues<\/strong> : Frequent modification of a large number of variables may cause redrawing and rearrangement, but there will be no problems with daily use.<\/li>\n Compatibility<\/strong> : Modern browsers support CSS variables, but in old projects, you need to confirm whether the target environment supports it.<\/li>\n<\/ul>\n\n Basically that's it. Making good use of CSS custom properties can make the theme system lighter and easier to maintain without introducing complex frameworks. As long as the structure is clear and the variables are classified reasonably, it is not difficult to maintain.<\/p>"} 国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂 Community Articles Topics Q&A Learn Course Programming Dictionary Tools Library Development tools Website Source Code PHP Libraries JS special effects Website Materials Extension plug-ins AI Tools Leisure Game Download Game Tutorials English 簡體中文 English 繁體中文 日本語 ??? Melayu Fran?ais Deutsch Login singup Table of Contents Why use CSS custom properties to make themes? How to organize topic variables? How to dynamically switch topics? Details to pay attention to in actual use Home Web Front-end CSS Tutorial How to use CSS custom properties for theming tutorial How to use CSS custom properties for theming tutorial 下次還敢 Jul 12, 2025 am 03:22 AM CSS custom properties are a flexible way to implement theme switching. It abstracts colors, fonts and other styles for easy management and dynamic modification. Compared to traditional multi-CSS files or preprocessor variables, CSS variables support runtime changes, suitable for dark mode and user-defined themes. It is recommended to define default variables in :root, create classes such as .dark for different topics, and toggle class names through JS to achieve dynamic topic switching. At the same time, you can use localStorage to remember user selections. Pay attention to variable scope, fallback value, performance and compatibility issues in details. Let’s talk about the key point directly: CSS custom properties (also called CSS variables) are a very flexible and maintainable way to implement topic switching. It allows you to abstract colors, fonts, spacing, etc. in styles, making it convenient for unified management and dynamic changes. Why use CSS custom properties to make themes? The traditional approach might be to write multiple CSS files, or use a preprocessor like Sass to define variables. But these methods are less convenient to switch topics at runtime. CSS custom attributes are effective at runtime and can be dynamically modified with JavaScript, which is very suitable for functions such as "dark mode" and "user custom theme". Advantages summary: Better maintainability Supports runtime modification No dependency on preprocessor Clear structure and clear hierarchy How to organize topic variables? The recommended approach is to define the default theme variable under :root , and then create additional classes for different themes (such as .dark ), so that you can change the theme by simply switching the class name. Example: :root { --bg-color: #ffffff; --text-color: #333333; } .dark { --bg-color: #121212; --text-color: #f1f1f1; } Then apply these variables to the general style: body { background-color: var(--bg-color); color: var(--text-color); } Structural recommendations: Concentrate variables in a file or block, such as _variables.css The variables related to the topic can be grouped by modules, such as color, font, margin, etc. Use naming specifications, such as --color-primary , --spacing-medium How to dynamically switch topics? If you want the user to click the button to switch topics, you can use JS to manipulate the class name of <html> or <body> . HTML example: <button id="theme-toggle">Switch theme</button> JS example: document.getElementById('theme-toggle').addEventListener('click', () => { document.documentElement.classList.toggle('dark'); }); This example will switch the dark class to activate the corresponding topic variable. You can also extend more theme classes, such as .blue-theme , .green-theme , and set different classes through JS to achieve multi-theme support. hint: You can use localStorage to remember the topics selected by the user Adding a transition effect during switching will be more friendly (such as fading in and out) Details to pay attention to in actual use Some details are easily overlooked, but they can affect the experience: Variable scope : Custom attributes are cascading, and children will inherit the variable value of the parent element. If you want to override, remember to check whether it is affected by other classes. Fallback value : When using a variable, you can add a default value, such as var(--text-color, #333) to prevent errors when the variable is undefined. Performance issues : Frequent modification of a large number of variables may cause redrawing and rearrangement, but there will be no problems with daily use. Compatibility : Modern browsers support CSS variables, but in old projects, you need to confirm whether the target environment supports it. Basically that's it. Making good use of CSS custom properties can make the theme system lighter and easier to maintain without introducing complex frameworks. As long as the structure is clear and the variables are classified reasonably, it is not difficult to maintain.The above is the detailed content of How to use CSS custom properties for theming tutorial. For more information, please follow other related articles on the PHP Chinese website! Statement of this Website The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn Hot AI Tools Undress AI Tool Undress images for free Undresser.AI Undress AI-powered app for creating realistic nude photos AI Clothes Remover Online AI tool for removing clothes from photos. Clothoff.io AI clothes remover Video Face Swap Swap faces in any video effortlessly with our completely free AI face swap tool! Show More Hot Article How to fix KB5060999 fails to install in Windows 11? 1 months ago By DDD Oguri Cap Build Guide | A Pretty Derby Musume 1 weeks ago By Jack chen Guide: Stellar Blade Save File Location/Save File Lost/Not Saving 3 weeks ago By DDD Dune: Awakening - Advanced Planetologist Quest Walkthrough 3 weeks ago By Jack chen Date Everything: Dirk And Harper Relationship Guide 3 weeks ago By Jack chen Show More Hot Tools Notepad++7.3.1 Easy-to-use and free code editor SublimeText3 Chinese version Chinese version, very easy to use Zend Studio 13.0.1 Powerful PHP integrated development environment Dreamweaver CS6 Visual web development tools SublimeText3 Mac version God-level code editing software (SublimeText3) Show More Hot Topics Where is the login entrance for gmail email? 8522 17 Java Tutorial 1747 16 CakePHP Tutorial 1600 56 Laravel Tutorial 1542 28 PHP Tutorial 1400 31 Show More Related knowledge What is 'render-blocking CSS'? Jun 24, 2025 am 12:42 AM CSS blocks page rendering because browsers view inline and external CSS as key resources by default, especially with imported stylesheets, header large amounts of inline CSS, and unoptimized media query styles. 1. Extract critical CSS and embed it into HTML; 2. Delay loading non-critical CSS through JavaScript; 3. Use media attributes to optimize loading such as print styles; 4. Compress and merge CSS to reduce requests. It is recommended to use tools to extract key CSS, combine rel="preload" asynchronous loading, and use media delayed loading reasonably to avoid excessive splitting and complex script control. How to use Lotties in Figma Jun 14, 2025 am 10:17 AM In the following tutorial, I will show you how to create Lottie animations in Figma. We'll use two colorful designs to exmplify how you can animate in Figma, and then I'll show you how to go from Figma to Lottie animations. All you need is a free Fig Breaking Boundaries: Building a Tangram Puzzle With (S)CSS Jun 13, 2025 am 11:33 AM We put it to the test and it turns out Sass can replace JavaScript, at least when it comes to low-level logic and puzzle behavior. With nothing but maps, mixins, functions, and a whole lot of math, we managed to bring our Tangram puzzle to life, no J External vs. Internal CSS: What's the Best Approach? Jun 20, 2025 am 12:45 AM ThebestapproachforCSSdependsontheproject'sspecificneeds.Forlargerprojects,externalCSSisbetterduetomaintainabilityandreusability;forsmallerprojectsorsingle-pageapplications,internalCSSmightbemoresuitable.It'scrucialtobalanceprojectsize,performanceneed Does my CSS must be on lower case? Jun 19, 2025 am 12:29 AM No,CSSdoesnothavetobeinlowercase.However,usinglowercaseisrecommendedfor:1)Consistencyandreadability,2)Avoidingerrorsinrelatedtechnologies,3)Potentialperformancebenefits,and4)Improvedcollaborationwithinteams. CSS Case Sensitivity: Understanding What Matters Jun 20, 2025 am 12:09 AM CSSismostlycase-insensitive,butURLsandfontfamilynamesarecase-sensitive.1)Propertiesandvalueslikecolor:red;arenotcase-sensitive.2)URLsmustmatchtheserver'scase,e.g.,/images/Logo.png.3)Fontfamilynameslike'OpenSans'mustbeexact. What is Autoprefixer and how does it work? Jul 02, 2025 am 01:15 AM Autoprefixer is a tool that automatically adds vendor prefixes to CSS attributes based on the target browser scope. 1. It solves the problem of manually maintaining prefixes with errors; 2. Work through the PostCSS plug-in form, parse CSS, analyze attributes that need to be prefixed, and generate code according to configuration; 3. The usage steps include installing plug-ins, setting browserslist, and enabling them in the build process; 4. Notes include not manually adding prefixes, keeping configuration updates, prefixes not all attributes, and it is recommended to use them with the preprocessor. What are CSS counters? Jun 19, 2025 am 12:34 AM CSScounterscanautomaticallynumbersectionsandlists.1)Usecounter-resettoinitialize,counter-incrementtoincrease,andcounter()orcounters()todisplayvalues.2)CombinewithJavaScriptfordynamiccontenttoensureaccurateupdates. See all articles <span id="vozn9"></span>
dark<\/code> class to activate the corresponding topic variable.<\/p>\n You can also extend more theme classes, such as .blue-theme<\/code> , .green-theme<\/code> , and set different classes through JS to achieve multi-theme support.<\/p>\n hint:<\/p>\n\n You can use localStorage<\/code> to remember the topics selected by the user<\/li>\n Adding a transition effect during switching will be more friendly (such as fading in and out)<\/li>\n<\/ul>\n\n Details to pay attention to in actual use<\/h3>\n Some details are easily overlooked, but they can affect the experience:<\/p>\n\n Variable scope<\/strong> : Custom attributes are cascading, and children will inherit the variable value of the parent element. If you want to override, remember to check whether it is affected by other classes.<\/li>\n Fallback value<\/strong> : When using a variable, you can add a default value, such as var(--text-color, #333)<\/code> to prevent errors when the variable is undefined.<\/li>\n Performance issues<\/strong> : Frequent modification of a large number of variables may cause redrawing and rearrangement, but there will be no problems with daily use.<\/li>\n Compatibility<\/strong> : Modern browsers support CSS variables, but in old projects, you need to confirm whether the target environment supports it.<\/li>\n<\/ul>\n\n Basically that's it. Making good use of CSS custom properties can make the theme system lighter and easier to maintain without introducing complex frameworks. As long as the structure is clear and the variables are classified reasonably, it is not difficult to maintain.<\/p>"} 国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂 Community Articles Topics Q&A Learn Course Programming Dictionary Tools Library Development tools Website Source Code PHP Libraries JS special effects Website Materials Extension plug-ins AI Tools Leisure Game Download Game Tutorials English 簡體中文 English 繁體中文 日本語 ??? Melayu Fran?ais Deutsch Login singup Table of Contents Why use CSS custom properties to make themes? How to organize topic variables? How to dynamically switch topics? Details to pay attention to in actual use Home Web Front-end CSS Tutorial How to use CSS custom properties for theming tutorial How to use CSS custom properties for theming tutorial 下次還敢 Jul 12, 2025 am 03:22 AM CSS custom properties are a flexible way to implement theme switching. It abstracts colors, fonts and other styles for easy management and dynamic modification. Compared to traditional multi-CSS files or preprocessor variables, CSS variables support runtime changes, suitable for dark mode and user-defined themes. It is recommended to define default variables in :root, create classes such as .dark for different topics, and toggle class names through JS to achieve dynamic topic switching. At the same time, you can use localStorage to remember user selections. Pay attention to variable scope, fallback value, performance and compatibility issues in details. Let’s talk about the key point directly: CSS custom properties (also called CSS variables) are a very flexible and maintainable way to implement topic switching. It allows you to abstract colors, fonts, spacing, etc. in styles, making it convenient for unified management and dynamic changes. Why use CSS custom properties to make themes? The traditional approach might be to write multiple CSS files, or use a preprocessor like Sass to define variables. But these methods are less convenient to switch topics at runtime. CSS custom attributes are effective at runtime and can be dynamically modified with JavaScript, which is very suitable for functions such as "dark mode" and "user custom theme". Advantages summary: Better maintainability Supports runtime modification No dependency on preprocessor Clear structure and clear hierarchy How to organize topic variables? The recommended approach is to define the default theme variable under :root , and then create additional classes for different themes (such as .dark ), so that you can change the theme by simply switching the class name. Example: :root { --bg-color: #ffffff; --text-color: #333333; } .dark { --bg-color: #121212; --text-color: #f1f1f1; } Then apply these variables to the general style: body { background-color: var(--bg-color); color: var(--text-color); } Structural recommendations: Concentrate variables in a file or block, such as _variables.css The variables related to the topic can be grouped by modules, such as color, font, margin, etc. Use naming specifications, such as --color-primary , --spacing-medium How to dynamically switch topics? If you want the user to click the button to switch topics, you can use JS to manipulate the class name of <html> or <body> . HTML example: <button id="theme-toggle">Switch theme</button> JS example: document.getElementById('theme-toggle').addEventListener('click', () => { document.documentElement.classList.toggle('dark'); }); This example will switch the dark class to activate the corresponding topic variable. You can also extend more theme classes, such as .blue-theme , .green-theme , and set different classes through JS to achieve multi-theme support. hint: You can use localStorage to remember the topics selected by the user Adding a transition effect during switching will be more friendly (such as fading in and out) Details to pay attention to in actual use Some details are easily overlooked, but they can affect the experience: Variable scope : Custom attributes are cascading, and children will inherit the variable value of the parent element. If you want to override, remember to check whether it is affected by other classes. Fallback value : When using a variable, you can add a default value, such as var(--text-color, #333) to prevent errors when the variable is undefined. Performance issues : Frequent modification of a large number of variables may cause redrawing and rearrangement, but there will be no problems with daily use. Compatibility : Modern browsers support CSS variables, but in old projects, you need to confirm whether the target environment supports it. Basically that's it. Making good use of CSS custom properties can make the theme system lighter and easier to maintain without introducing complex frameworks. As long as the structure is clear and the variables are classified reasonably, it is not difficult to maintain.The above is the detailed content of How to use CSS custom properties for theming tutorial. For more information, please follow other related articles on the PHP Chinese website! Statement of this Website The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn Hot AI Tools Undress AI Tool Undress images for free Undresser.AI Undress AI-powered app for creating realistic nude photos AI Clothes Remover Online AI tool for removing clothes from photos. Clothoff.io AI clothes remover Video Face Swap Swap faces in any video effortlessly with our completely free AI face swap tool! Show More Hot Article How to fix KB5060999 fails to install in Windows 11? 1 months ago By DDD Oguri Cap Build Guide | A Pretty Derby Musume 1 weeks ago By Jack chen Guide: Stellar Blade Save File Location/Save File Lost/Not Saving 3 weeks ago By DDD Dune: Awakening - Advanced Planetologist Quest Walkthrough 3 weeks ago By Jack chen Date Everything: Dirk And Harper Relationship Guide 3 weeks ago By Jack chen Show More Hot Tools Notepad++7.3.1 Easy-to-use and free code editor SublimeText3 Chinese version Chinese version, very easy to use Zend Studio 13.0.1 Powerful PHP integrated development environment Dreamweaver CS6 Visual web development tools SublimeText3 Mac version God-level code editing software (SublimeText3) Show More Hot Topics Where is the login entrance for gmail email? 8522 17 Java Tutorial 1747 16 CakePHP Tutorial 1600 56 Laravel Tutorial 1542 28 PHP Tutorial 1400 31 Show More Related knowledge What is 'render-blocking CSS'? Jun 24, 2025 am 12:42 AM CSS blocks page rendering because browsers view inline and external CSS as key resources by default, especially with imported stylesheets, header large amounts of inline CSS, and unoptimized media query styles. 1. Extract critical CSS and embed it into HTML; 2. Delay loading non-critical CSS through JavaScript; 3. Use media attributes to optimize loading such as print styles; 4. Compress and merge CSS to reduce requests. It is recommended to use tools to extract key CSS, combine rel="preload" asynchronous loading, and use media delayed loading reasonably to avoid excessive splitting and complex script control. How to use Lotties in Figma Jun 14, 2025 am 10:17 AM In the following tutorial, I will show you how to create Lottie animations in Figma. We'll use two colorful designs to exmplify how you can animate in Figma, and then I'll show you how to go from Figma to Lottie animations. All you need is a free Fig Breaking Boundaries: Building a Tangram Puzzle With (S)CSS Jun 13, 2025 am 11:33 AM We put it to the test and it turns out Sass can replace JavaScript, at least when it comes to low-level logic and puzzle behavior. With nothing but maps, mixins, functions, and a whole lot of math, we managed to bring our Tangram puzzle to life, no J External vs. Internal CSS: What's the Best Approach? Jun 20, 2025 am 12:45 AM ThebestapproachforCSSdependsontheproject'sspecificneeds.Forlargerprojects,externalCSSisbetterduetomaintainabilityandreusability;forsmallerprojectsorsingle-pageapplications,internalCSSmightbemoresuitable.It'scrucialtobalanceprojectsize,performanceneed Does my CSS must be on lower case? Jun 19, 2025 am 12:29 AM No,CSSdoesnothavetobeinlowercase.However,usinglowercaseisrecommendedfor:1)Consistencyandreadability,2)Avoidingerrorsinrelatedtechnologies,3)Potentialperformancebenefits,and4)Improvedcollaborationwithinteams. CSS Case Sensitivity: Understanding What Matters Jun 20, 2025 am 12:09 AM CSSismostlycase-insensitive,butURLsandfontfamilynamesarecase-sensitive.1)Propertiesandvalueslikecolor:red;arenotcase-sensitive.2)URLsmustmatchtheserver'scase,e.g.,/images/Logo.png.3)Fontfamilynameslike'OpenSans'mustbeexact. What is Autoprefixer and how does it work? Jul 02, 2025 am 01:15 AM Autoprefixer is a tool that automatically adds vendor prefixes to CSS attributes based on the target browser scope. 1. It solves the problem of manually maintaining prefixes with errors; 2. Work through the PostCSS plug-in form, parse CSS, analyze attributes that need to be prefixed, and generate code according to configuration; 3. The usage steps include installing plug-ins, setting browserslist, and enabling them in the build process; 4. Notes include not manually adding prefixes, keeping configuration updates, prefixes not all attributes, and it is recommended to use them with the preprocessor. What are CSS counters? Jun 19, 2025 am 12:34 AM CSScounterscanautomaticallynumbersectionsandlists.1)Usecounter-resettoinitialize,counter-incrementtoincrease,andcounter()orcounters()todisplayvalues.2)CombinewithJavaScriptfordynamiccontenttoensureaccurateupdates. See all articles <span id="vozn9"></span>
You can also extend more theme classes, such as .blue-theme<\/code> , .green-theme<\/code> , and set different classes through JS to achieve multi-theme support.<\/p>\n hint:<\/p>\n\n You can use localStorage<\/code> to remember the topics selected by the user<\/li>\n Adding a transition effect during switching will be more friendly (such as fading in and out)<\/li>\n<\/ul>\n\n Details to pay attention to in actual use<\/h3>\n Some details are easily overlooked, but they can affect the experience:<\/p>\n\n Variable scope<\/strong> : Custom attributes are cascading, and children will inherit the variable value of the parent element. If you want to override, remember to check whether it is affected by other classes.<\/li>\n Fallback value<\/strong> : When using a variable, you can add a default value, such as var(--text-color, #333)<\/code> to prevent errors when the variable is undefined.<\/li>\n Performance issues<\/strong> : Frequent modification of a large number of variables may cause redrawing and rearrangement, but there will be no problems with daily use.<\/li>\n Compatibility<\/strong> : Modern browsers support CSS variables, but in old projects, you need to confirm whether the target environment supports it.<\/li>\n<\/ul>\n\n Basically that's it. Making good use of CSS custom properties can make the theme system lighter and easier to maintain without introducing complex frameworks. As long as the structure is clear and the variables are classified reasonably, it is not difficult to maintain.<\/p>"} 国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂 Community Articles Topics Q&A Learn Course Programming Dictionary Tools Library Development tools Website Source Code PHP Libraries JS special effects Website Materials Extension plug-ins AI Tools Leisure Game Download Game Tutorials English 簡體中文 English 繁體中文 日本語 ??? Melayu Fran?ais Deutsch Login singup Table of Contents Why use CSS custom properties to make themes? How to organize topic variables? How to dynamically switch topics? Details to pay attention to in actual use Home Web Front-end CSS Tutorial How to use CSS custom properties for theming tutorial How to use CSS custom properties for theming tutorial 下次還敢 Jul 12, 2025 am 03:22 AM CSS custom properties are a flexible way to implement theme switching. It abstracts colors, fonts and other styles for easy management and dynamic modification. Compared to traditional multi-CSS files or preprocessor variables, CSS variables support runtime changes, suitable for dark mode and user-defined themes. It is recommended to define default variables in :root, create classes such as .dark for different topics, and toggle class names through JS to achieve dynamic topic switching. At the same time, you can use localStorage to remember user selections. Pay attention to variable scope, fallback value, performance and compatibility issues in details. Let’s talk about the key point directly: CSS custom properties (also called CSS variables) are a very flexible and maintainable way to implement topic switching. It allows you to abstract colors, fonts, spacing, etc. in styles, making it convenient for unified management and dynamic changes. Why use CSS custom properties to make themes? The traditional approach might be to write multiple CSS files, or use a preprocessor like Sass to define variables. But these methods are less convenient to switch topics at runtime. CSS custom attributes are effective at runtime and can be dynamically modified with JavaScript, which is very suitable for functions such as "dark mode" and "user custom theme". Advantages summary: Better maintainability Supports runtime modification No dependency on preprocessor Clear structure and clear hierarchy How to organize topic variables? The recommended approach is to define the default theme variable under :root , and then create additional classes for different themes (such as .dark ), so that you can change the theme by simply switching the class name. Example: :root { --bg-color: #ffffff; --text-color: #333333; } .dark { --bg-color: #121212; --text-color: #f1f1f1; } Then apply these variables to the general style: body { background-color: var(--bg-color); color: var(--text-color); } Structural recommendations: Concentrate variables in a file or block, such as _variables.css The variables related to the topic can be grouped by modules, such as color, font, margin, etc. Use naming specifications, such as --color-primary , --spacing-medium How to dynamically switch topics? If you want the user to click the button to switch topics, you can use JS to manipulate the class name of <html> or <body> . HTML example: <button id="theme-toggle">Switch theme</button> JS example: document.getElementById('theme-toggle').addEventListener('click', () => { document.documentElement.classList.toggle('dark'); }); This example will switch the dark class to activate the corresponding topic variable. You can also extend more theme classes, such as .blue-theme , .green-theme , and set different classes through JS to achieve multi-theme support. hint: You can use localStorage to remember the topics selected by the user Adding a transition effect during switching will be more friendly (such as fading in and out) Details to pay attention to in actual use Some details are easily overlooked, but they can affect the experience: Variable scope : Custom attributes are cascading, and children will inherit the variable value of the parent element. If you want to override, remember to check whether it is affected by other classes. Fallback value : When using a variable, you can add a default value, such as var(--text-color, #333) to prevent errors when the variable is undefined. Performance issues : Frequent modification of a large number of variables may cause redrawing and rearrangement, but there will be no problems with daily use. Compatibility : Modern browsers support CSS variables, but in old projects, you need to confirm whether the target environment supports it. Basically that's it. Making good use of CSS custom properties can make the theme system lighter and easier to maintain without introducing complex frameworks. As long as the structure is clear and the variables are classified reasonably, it is not difficult to maintain.The above is the detailed content of How to use CSS custom properties for theming tutorial. For more information, please follow other related articles on the PHP Chinese website! Statement of this Website The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn Hot AI Tools Undress AI Tool Undress images for free Undresser.AI Undress AI-powered app for creating realistic nude photos AI Clothes Remover Online AI tool for removing clothes from photos. Clothoff.io AI clothes remover Video Face Swap Swap faces in any video effortlessly with our completely free AI face swap tool! Show More Hot Article How to fix KB5060999 fails to install in Windows 11? 1 months ago By DDD Oguri Cap Build Guide | A Pretty Derby Musume 1 weeks ago By Jack chen Guide: Stellar Blade Save File Location/Save File Lost/Not Saving 3 weeks ago By DDD Dune: Awakening - Advanced Planetologist Quest Walkthrough 3 weeks ago By Jack chen Date Everything: Dirk And Harper Relationship Guide 3 weeks ago By Jack chen Show More Hot Tools Notepad++7.3.1 Easy-to-use and free code editor SublimeText3 Chinese version Chinese version, very easy to use Zend Studio 13.0.1 Powerful PHP integrated development environment Dreamweaver CS6 Visual web development tools SublimeText3 Mac version God-level code editing software (SublimeText3) Show More Hot Topics Where is the login entrance for gmail email? 8522 17 Java Tutorial 1747 16 CakePHP Tutorial 1600 56 Laravel Tutorial 1542 28 PHP Tutorial 1400 31 Show More Related knowledge What is 'render-blocking CSS'? Jun 24, 2025 am 12:42 AM CSS blocks page rendering because browsers view inline and external CSS as key resources by default, especially with imported stylesheets, header large amounts of inline CSS, and unoptimized media query styles. 1. Extract critical CSS and embed it into HTML; 2. Delay loading non-critical CSS through JavaScript; 3. Use media attributes to optimize loading such as print styles; 4. Compress and merge CSS to reduce requests. It is recommended to use tools to extract key CSS, combine rel="preload" asynchronous loading, and use media delayed loading reasonably to avoid excessive splitting and complex script control. How to use Lotties in Figma Jun 14, 2025 am 10:17 AM In the following tutorial, I will show you how to create Lottie animations in Figma. We'll use two colorful designs to exmplify how you can animate in Figma, and then I'll show you how to go from Figma to Lottie animations. All you need is a free Fig Breaking Boundaries: Building a Tangram Puzzle With (S)CSS Jun 13, 2025 am 11:33 AM We put it to the test and it turns out Sass can replace JavaScript, at least when it comes to low-level logic and puzzle behavior. With nothing but maps, mixins, functions, and a whole lot of math, we managed to bring our Tangram puzzle to life, no J External vs. Internal CSS: What's the Best Approach? Jun 20, 2025 am 12:45 AM ThebestapproachforCSSdependsontheproject'sspecificneeds.Forlargerprojects,externalCSSisbetterduetomaintainabilityandreusability;forsmallerprojectsorsingle-pageapplications,internalCSSmightbemoresuitable.It'scrucialtobalanceprojectsize,performanceneed Does my CSS must be on lower case? Jun 19, 2025 am 12:29 AM No,CSSdoesnothavetobeinlowercase.However,usinglowercaseisrecommendedfor:1)Consistencyandreadability,2)Avoidingerrorsinrelatedtechnologies,3)Potentialperformancebenefits,and4)Improvedcollaborationwithinteams. CSS Case Sensitivity: Understanding What Matters Jun 20, 2025 am 12:09 AM CSSismostlycase-insensitive,butURLsandfontfamilynamesarecase-sensitive.1)Propertiesandvalueslikecolor:red;arenotcase-sensitive.2)URLsmustmatchtheserver'scase,e.g.,/images/Logo.png.3)Fontfamilynameslike'OpenSans'mustbeexact. What is Autoprefixer and how does it work? Jul 02, 2025 am 01:15 AM Autoprefixer is a tool that automatically adds vendor prefixes to CSS attributes based on the target browser scope. 1. It solves the problem of manually maintaining prefixes with errors; 2. Work through the PostCSS plug-in form, parse CSS, analyze attributes that need to be prefixed, and generate code according to configuration; 3. The usage steps include installing plug-ins, setting browserslist, and enabling them in the build process; 4. Notes include not manually adding prefixes, keeping configuration updates, prefixes not all attributes, and it is recommended to use them with the preprocessor. What are CSS counters? Jun 19, 2025 am 12:34 AM CSScounterscanautomaticallynumbersectionsandlists.1)Usecounter-resettoinitialize,counter-incrementtoincrease,andcounter()orcounters()todisplayvalues.2)CombinewithJavaScriptfordynamiccontenttoensureaccurateupdates. See all articles <span id="vozn9"></span>
.blue-theme<\/code> , .green-theme<\/code> , and set different classes through JS to achieve multi-theme support.<\/p>\n hint:<\/p>\n\n You can use localStorage<\/code> to remember the topics selected by the user<\/li>\n Adding a transition effect during switching will be more friendly (such as fading in and out)<\/li>\n<\/ul>\n\n Details to pay attention to in actual use<\/h3>\n Some details are easily overlooked, but they can affect the experience:<\/p>\n\n Variable scope<\/strong> : Custom attributes are cascading, and children will inherit the variable value of the parent element. If you want to override, remember to check whether it is affected by other classes.<\/li>\n Fallback value<\/strong> : When using a variable, you can add a default value, such as var(--text-color, #333)<\/code> to prevent errors when the variable is undefined.<\/li>\n Performance issues<\/strong> : Frequent modification of a large number of variables may cause redrawing and rearrangement, but there will be no problems with daily use.<\/li>\n Compatibility<\/strong> : Modern browsers support CSS variables, but in old projects, you need to confirm whether the target environment supports it.<\/li>\n<\/ul>\n\n Basically that's it. Making good use of CSS custom properties can make the theme system lighter and easier to maintain without introducing complex frameworks. As long as the structure is clear and the variables are classified reasonably, it is not difficult to maintain.<\/p>"} 国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂 Community Articles Topics Q&A Learn Course Programming Dictionary Tools Library Development tools Website Source Code PHP Libraries JS special effects Website Materials Extension plug-ins AI Tools Leisure Game Download Game Tutorials English 簡體中文 English 繁體中文 日本語 ??? Melayu Fran?ais Deutsch Login singup Table of Contents Why use CSS custom properties to make themes? How to organize topic variables? How to dynamically switch topics? Details to pay attention to in actual use Home Web Front-end CSS Tutorial How to use CSS custom properties for theming tutorial How to use CSS custom properties for theming tutorial 下次還敢 Jul 12, 2025 am 03:22 AM CSS custom properties are a flexible way to implement theme switching. It abstracts colors, fonts and other styles for easy management and dynamic modification. Compared to traditional multi-CSS files or preprocessor variables, CSS variables support runtime changes, suitable for dark mode and user-defined themes. It is recommended to define default variables in :root, create classes such as .dark for different topics, and toggle class names through JS to achieve dynamic topic switching. At the same time, you can use localStorage to remember user selections. Pay attention to variable scope, fallback value, performance and compatibility issues in details. Let’s talk about the key point directly: CSS custom properties (also called CSS variables) are a very flexible and maintainable way to implement topic switching. It allows you to abstract colors, fonts, spacing, etc. in styles, making it convenient for unified management and dynamic changes. Why use CSS custom properties to make themes? The traditional approach might be to write multiple CSS files, or use a preprocessor like Sass to define variables. But these methods are less convenient to switch topics at runtime. CSS custom attributes are effective at runtime and can be dynamically modified with JavaScript, which is very suitable for functions such as "dark mode" and "user custom theme". Advantages summary: Better maintainability Supports runtime modification No dependency on preprocessor Clear structure and clear hierarchy How to organize topic variables? The recommended approach is to define the default theme variable under :root , and then create additional classes for different themes (such as .dark ), so that you can change the theme by simply switching the class name. Example: :root { --bg-color: #ffffff; --text-color: #333333; } .dark { --bg-color: #121212; --text-color: #f1f1f1; } Then apply these variables to the general style: body { background-color: var(--bg-color); color: var(--text-color); } Structural recommendations: Concentrate variables in a file or block, such as _variables.css The variables related to the topic can be grouped by modules, such as color, font, margin, etc. Use naming specifications, such as --color-primary , --spacing-medium How to dynamically switch topics? If you want the user to click the button to switch topics, you can use JS to manipulate the class name of <html> or <body> . HTML example: <button id="theme-toggle">Switch theme</button> JS example: document.getElementById('theme-toggle').addEventListener('click', () => { document.documentElement.classList.toggle('dark'); }); This example will switch the dark class to activate the corresponding topic variable. You can also extend more theme classes, such as .blue-theme , .green-theme , and set different classes through JS to achieve multi-theme support. hint: You can use localStorage to remember the topics selected by the user Adding a transition effect during switching will be more friendly (such as fading in and out) Details to pay attention to in actual use Some details are easily overlooked, but they can affect the experience: Variable scope : Custom attributes are cascading, and children will inherit the variable value of the parent element. If you want to override, remember to check whether it is affected by other classes. Fallback value : When using a variable, you can add a default value, such as var(--text-color, #333) to prevent errors when the variable is undefined. Performance issues : Frequent modification of a large number of variables may cause redrawing and rearrangement, but there will be no problems with daily use. Compatibility : Modern browsers support CSS variables, but in old projects, you need to confirm whether the target environment supports it. Basically that's it. Making good use of CSS custom properties can make the theme system lighter and easier to maintain without introducing complex frameworks. As long as the structure is clear and the variables are classified reasonably, it is not difficult to maintain.The above is the detailed content of How to use CSS custom properties for theming tutorial. For more information, please follow other related articles on the PHP Chinese website! Statement of this Website The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn Hot AI Tools Undress AI Tool Undress images for free Undresser.AI Undress AI-powered app for creating realistic nude photos AI Clothes Remover Online AI tool for removing clothes from photos. Clothoff.io AI clothes remover Video Face Swap Swap faces in any video effortlessly with our completely free AI face swap tool! Show More Hot Article How to fix KB5060999 fails to install in Windows 11? 1 months ago By DDD Oguri Cap Build Guide | A Pretty Derby Musume 1 weeks ago By Jack chen Guide: Stellar Blade Save File Location/Save File Lost/Not Saving 3 weeks ago By DDD Dune: Awakening - Advanced Planetologist Quest Walkthrough 3 weeks ago By Jack chen Date Everything: Dirk And Harper Relationship Guide 3 weeks ago By Jack chen Show More Hot Tools Notepad++7.3.1 Easy-to-use and free code editor SublimeText3 Chinese version Chinese version, very easy to use Zend Studio 13.0.1 Powerful PHP integrated development environment Dreamweaver CS6 Visual web development tools SublimeText3 Mac version God-level code editing software (SublimeText3) Show More Hot Topics Where is the login entrance for gmail email? 8522 17 Java Tutorial 1747 16 CakePHP Tutorial 1600 56 Laravel Tutorial 1542 28 PHP Tutorial 1400 31 Show More Related knowledge What is 'render-blocking CSS'? Jun 24, 2025 am 12:42 AM CSS blocks page rendering because browsers view inline and external CSS as key resources by default, especially with imported stylesheets, header large amounts of inline CSS, and unoptimized media query styles. 1. Extract critical CSS and embed it into HTML; 2. Delay loading non-critical CSS through JavaScript; 3. Use media attributes to optimize loading such as print styles; 4. Compress and merge CSS to reduce requests. It is recommended to use tools to extract key CSS, combine rel="preload" asynchronous loading, and use media delayed loading reasonably to avoid excessive splitting and complex script control. How to use Lotties in Figma Jun 14, 2025 am 10:17 AM In the following tutorial, I will show you how to create Lottie animations in Figma. We'll use two colorful designs to exmplify how you can animate in Figma, and then I'll show you how to go from Figma to Lottie animations. All you need is a free Fig Breaking Boundaries: Building a Tangram Puzzle With (S)CSS Jun 13, 2025 am 11:33 AM We put it to the test and it turns out Sass can replace JavaScript, at least when it comes to low-level logic and puzzle behavior. With nothing but maps, mixins, functions, and a whole lot of math, we managed to bring our Tangram puzzle to life, no J External vs. Internal CSS: What's the Best Approach? Jun 20, 2025 am 12:45 AM ThebestapproachforCSSdependsontheproject'sspecificneeds.Forlargerprojects,externalCSSisbetterduetomaintainabilityandreusability;forsmallerprojectsorsingle-pageapplications,internalCSSmightbemoresuitable.It'scrucialtobalanceprojectsize,performanceneed Does my CSS must be on lower case? Jun 19, 2025 am 12:29 AM No,CSSdoesnothavetobeinlowercase.However,usinglowercaseisrecommendedfor:1)Consistencyandreadability,2)Avoidingerrorsinrelatedtechnologies,3)Potentialperformancebenefits,and4)Improvedcollaborationwithinteams. CSS Case Sensitivity: Understanding What Matters Jun 20, 2025 am 12:09 AM CSSismostlycase-insensitive,butURLsandfontfamilynamesarecase-sensitive.1)Propertiesandvalueslikecolor:red;arenotcase-sensitive.2)URLsmustmatchtheserver'scase,e.g.,/images/Logo.png.3)Fontfamilynameslike'OpenSans'mustbeexact. What is Autoprefixer and how does it work? Jul 02, 2025 am 01:15 AM Autoprefixer is a tool that automatically adds vendor prefixes to CSS attributes based on the target browser scope. 1. It solves the problem of manually maintaining prefixes with errors; 2. Work through the PostCSS plug-in form, parse CSS, analyze attributes that need to be prefixed, and generate code according to configuration; 3. The usage steps include installing plug-ins, setting browserslist, and enabling them in the build process; 4. Notes include not manually adding prefixes, keeping configuration updates, prefixes not all attributes, and it is recommended to use them with the preprocessor. What are CSS counters? Jun 19, 2025 am 12:34 AM CSScounterscanautomaticallynumbersectionsandlists.1)Usecounter-resettoinitialize,counter-incrementtoincrease,andcounter()orcounters()todisplayvalues.2)CombinewithJavaScriptfordynamiccontenttoensureaccurateupdates. See all articles <span id="vozn9"></span>
.green-theme<\/code> , and set different classes through JS to achieve multi-theme support.<\/p>\n hint:<\/p>\n\n You can use localStorage<\/code> to remember the topics selected by the user<\/li>\n Adding a transition effect during switching will be more friendly (such as fading in and out)<\/li>\n<\/ul>\n\n Details to pay attention to in actual use<\/h3>\n Some details are easily overlooked, but they can affect the experience:<\/p>\n\n Variable scope<\/strong> : Custom attributes are cascading, and children will inherit the variable value of the parent element. If you want to override, remember to check whether it is affected by other classes.<\/li>\n Fallback value<\/strong> : When using a variable, you can add a default value, such as var(--text-color, #333)<\/code> to prevent errors when the variable is undefined.<\/li>\n Performance issues<\/strong> : Frequent modification of a large number of variables may cause redrawing and rearrangement, but there will be no problems with daily use.<\/li>\n Compatibility<\/strong> : Modern browsers support CSS variables, but in old projects, you need to confirm whether the target environment supports it.<\/li>\n<\/ul>\n\n Basically that's it. Making good use of CSS custom properties can make the theme system lighter and easier to maintain without introducing complex frameworks. As long as the structure is clear and the variables are classified reasonably, it is not difficult to maintain.<\/p>"} 国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂 Community Articles Topics Q&A Learn Course Programming Dictionary Tools Library Development tools Website Source Code PHP Libraries JS special effects Website Materials Extension plug-ins AI Tools Leisure Game Download Game Tutorials English 簡體中文 English 繁體中文 日本語 ??? Melayu Fran?ais Deutsch Login singup Table of Contents Why use CSS custom properties to make themes? How to organize topic variables? How to dynamically switch topics? Details to pay attention to in actual use Home Web Front-end CSS Tutorial How to use CSS custom properties for theming tutorial How to use CSS custom properties for theming tutorial 下次還敢 Jul 12, 2025 am 03:22 AM CSS custom properties are a flexible way to implement theme switching. It abstracts colors, fonts and other styles for easy management and dynamic modification. Compared to traditional multi-CSS files or preprocessor variables, CSS variables support runtime changes, suitable for dark mode and user-defined themes. It is recommended to define default variables in :root, create classes such as .dark for different topics, and toggle class names through JS to achieve dynamic topic switching. At the same time, you can use localStorage to remember user selections. Pay attention to variable scope, fallback value, performance and compatibility issues in details. Let’s talk about the key point directly: CSS custom properties (also called CSS variables) are a very flexible and maintainable way to implement topic switching. It allows you to abstract colors, fonts, spacing, etc. in styles, making it convenient for unified management and dynamic changes. Why use CSS custom properties to make themes? The traditional approach might be to write multiple CSS files, or use a preprocessor like Sass to define variables. But these methods are less convenient to switch topics at runtime. CSS custom attributes are effective at runtime and can be dynamically modified with JavaScript, which is very suitable for functions such as "dark mode" and "user custom theme". Advantages summary: Better maintainability Supports runtime modification No dependency on preprocessor Clear structure and clear hierarchy How to organize topic variables? The recommended approach is to define the default theme variable under :root , and then create additional classes for different themes (such as .dark ), so that you can change the theme by simply switching the class name. Example: :root { --bg-color: #ffffff; --text-color: #333333; } .dark { --bg-color: #121212; --text-color: #f1f1f1; } Then apply these variables to the general style: body { background-color: var(--bg-color); color: var(--text-color); } Structural recommendations: Concentrate variables in a file or block, such as _variables.css The variables related to the topic can be grouped by modules, such as color, font, margin, etc. Use naming specifications, such as --color-primary , --spacing-medium How to dynamically switch topics? If you want the user to click the button to switch topics, you can use JS to manipulate the class name of <html> or <body> . HTML example: <button id="theme-toggle">Switch theme</button> JS example: document.getElementById('theme-toggle').addEventListener('click', () => { document.documentElement.classList.toggle('dark'); }); This example will switch the dark class to activate the corresponding topic variable. You can also extend more theme classes, such as .blue-theme , .green-theme , and set different classes through JS to achieve multi-theme support. hint: You can use localStorage to remember the topics selected by the user Adding a transition effect during switching will be more friendly (such as fading in and out) Details to pay attention to in actual use Some details are easily overlooked, but they can affect the experience: Variable scope : Custom attributes are cascading, and children will inherit the variable value of the parent element. If you want to override, remember to check whether it is affected by other classes. Fallback value : When using a variable, you can add a default value, such as var(--text-color, #333) to prevent errors when the variable is undefined. Performance issues : Frequent modification of a large number of variables may cause redrawing and rearrangement, but there will be no problems with daily use. Compatibility : Modern browsers support CSS variables, but in old projects, you need to confirm whether the target environment supports it. Basically that's it. Making good use of CSS custom properties can make the theme system lighter and easier to maintain without introducing complex frameworks. As long as the structure is clear and the variables are classified reasonably, it is not difficult to maintain.The above is the detailed content of How to use CSS custom properties for theming tutorial. For more information, please follow other related articles on the PHP Chinese website! Statement of this Website The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn Hot AI Tools Undress AI Tool Undress images for free Undresser.AI Undress AI-powered app for creating realistic nude photos AI Clothes Remover Online AI tool for removing clothes from photos. Clothoff.io AI clothes remover Video Face Swap Swap faces in any video effortlessly with our completely free AI face swap tool! Show More Hot Article How to fix KB5060999 fails to install in Windows 11? 1 months ago By DDD Oguri Cap Build Guide | A Pretty Derby Musume 1 weeks ago By Jack chen Guide: Stellar Blade Save File Location/Save File Lost/Not Saving 3 weeks ago By DDD Dune: Awakening - Advanced Planetologist Quest Walkthrough 3 weeks ago By Jack chen Date Everything: Dirk And Harper Relationship Guide 3 weeks ago By Jack chen Show More Hot Tools Notepad++7.3.1 Easy-to-use and free code editor SublimeText3 Chinese version Chinese version, very easy to use Zend Studio 13.0.1 Powerful PHP integrated development environment Dreamweaver CS6 Visual web development tools SublimeText3 Mac version God-level code editing software (SublimeText3) Show More Hot Topics Where is the login entrance for gmail email? 8522 17 Java Tutorial 1747 16 CakePHP Tutorial 1600 56 Laravel Tutorial 1542 28 PHP Tutorial 1400 31 Show More Related knowledge What is 'render-blocking CSS'? Jun 24, 2025 am 12:42 AM CSS blocks page rendering because browsers view inline and external CSS as key resources by default, especially with imported stylesheets, header large amounts of inline CSS, and unoptimized media query styles. 1. Extract critical CSS and embed it into HTML; 2. Delay loading non-critical CSS through JavaScript; 3. Use media attributes to optimize loading such as print styles; 4. Compress and merge CSS to reduce requests. It is recommended to use tools to extract key CSS, combine rel="preload" asynchronous loading, and use media delayed loading reasonably to avoid excessive splitting and complex script control. How to use Lotties in Figma Jun 14, 2025 am 10:17 AM In the following tutorial, I will show you how to create Lottie animations in Figma. We'll use two colorful designs to exmplify how you can animate in Figma, and then I'll show you how to go from Figma to Lottie animations. All you need is a free Fig Breaking Boundaries: Building a Tangram Puzzle With (S)CSS Jun 13, 2025 am 11:33 AM We put it to the test and it turns out Sass can replace JavaScript, at least when it comes to low-level logic and puzzle behavior. With nothing but maps, mixins, functions, and a whole lot of math, we managed to bring our Tangram puzzle to life, no J External vs. Internal CSS: What's the Best Approach? Jun 20, 2025 am 12:45 AM ThebestapproachforCSSdependsontheproject'sspecificneeds.Forlargerprojects,externalCSSisbetterduetomaintainabilityandreusability;forsmallerprojectsorsingle-pageapplications,internalCSSmightbemoresuitable.It'scrucialtobalanceprojectsize,performanceneed Does my CSS must be on lower case? Jun 19, 2025 am 12:29 AM No,CSSdoesnothavetobeinlowercase.However,usinglowercaseisrecommendedfor:1)Consistencyandreadability,2)Avoidingerrorsinrelatedtechnologies,3)Potentialperformancebenefits,and4)Improvedcollaborationwithinteams. CSS Case Sensitivity: Understanding What Matters Jun 20, 2025 am 12:09 AM CSSismostlycase-insensitive,butURLsandfontfamilynamesarecase-sensitive.1)Propertiesandvalueslikecolor:red;arenotcase-sensitive.2)URLsmustmatchtheserver'scase,e.g.,/images/Logo.png.3)Fontfamilynameslike'OpenSans'mustbeexact. What is Autoprefixer and how does it work? Jul 02, 2025 am 01:15 AM Autoprefixer is a tool that automatically adds vendor prefixes to CSS attributes based on the target browser scope. 1. It solves the problem of manually maintaining prefixes with errors; 2. Work through the PostCSS plug-in form, parse CSS, analyze attributes that need to be prefixed, and generate code according to configuration; 3. The usage steps include installing plug-ins, setting browserslist, and enabling them in the build process; 4. Notes include not manually adding prefixes, keeping configuration updates, prefixes not all attributes, and it is recommended to use them with the preprocessor. What are CSS counters? Jun 19, 2025 am 12:34 AM CSScounterscanautomaticallynumbersectionsandlists.1)Usecounter-resettoinitialize,counter-incrementtoincrease,andcounter()orcounters()todisplayvalues.2)CombinewithJavaScriptfordynamiccontenttoensureaccurateupdates. See all articles <span id="vozn9"></span>
hint:<\/p>\n
localStorage<\/code> to remember the topics selected by the user<\/li>\n Adding a transition effect during switching will be more friendly (such as fading in and out)<\/li>\n<\/ul>\n\n Details to pay attention to in actual use<\/h3>\n Some details are easily overlooked, but they can affect the experience:<\/p>\n\n Variable scope<\/strong> : Custom attributes are cascading, and children will inherit the variable value of the parent element. If you want to override, remember to check whether it is affected by other classes.<\/li>\n Fallback value<\/strong> : When using a variable, you can add a default value, such as var(--text-color, #333)<\/code> to prevent errors when the variable is undefined.<\/li>\n Performance issues<\/strong> : Frequent modification of a large number of variables may cause redrawing and rearrangement, but there will be no problems with daily use.<\/li>\n Compatibility<\/strong> : Modern browsers support CSS variables, but in old projects, you need to confirm whether the target environment supports it.<\/li>\n<\/ul>\n\n Basically that's it. Making good use of CSS custom properties can make the theme system lighter and easier to maintain without introducing complex frameworks. As long as the structure is clear and the variables are classified reasonably, it is not difficult to maintain.<\/p>"} 国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂 Community Articles Topics Q&A Learn Course Programming Dictionary Tools Library Development tools Website Source Code PHP Libraries JS special effects Website Materials Extension plug-ins AI Tools Leisure Game Download Game Tutorials English 簡體中文 English 繁體中文 日本語 ??? Melayu Fran?ais Deutsch Login singup Table of Contents Why use CSS custom properties to make themes? How to organize topic variables? How to dynamically switch topics? Details to pay attention to in actual use Home Web Front-end CSS Tutorial How to use CSS custom properties for theming tutorial How to use CSS custom properties for theming tutorial 下次還敢 Jul 12, 2025 am 03:22 AM CSS custom properties are a flexible way to implement theme switching. It abstracts colors, fonts and other styles for easy management and dynamic modification. Compared to traditional multi-CSS files or preprocessor variables, CSS variables support runtime changes, suitable for dark mode and user-defined themes. It is recommended to define default variables in :root, create classes such as .dark for different topics, and toggle class names through JS to achieve dynamic topic switching. At the same time, you can use localStorage to remember user selections. Pay attention to variable scope, fallback value, performance and compatibility issues in details. Let’s talk about the key point directly: CSS custom properties (also called CSS variables) are a very flexible and maintainable way to implement topic switching. It allows you to abstract colors, fonts, spacing, etc. in styles, making it convenient for unified management and dynamic changes. Why use CSS custom properties to make themes? The traditional approach might be to write multiple CSS files, or use a preprocessor like Sass to define variables. But these methods are less convenient to switch topics at runtime. CSS custom attributes are effective at runtime and can be dynamically modified with JavaScript, which is very suitable for functions such as "dark mode" and "user custom theme". Advantages summary: Better maintainability Supports runtime modification No dependency on preprocessor Clear structure and clear hierarchy How to organize topic variables? The recommended approach is to define the default theme variable under :root , and then create additional classes for different themes (such as .dark ), so that you can change the theme by simply switching the class name. Example: :root { --bg-color: #ffffff; --text-color: #333333; } .dark { --bg-color: #121212; --text-color: #f1f1f1; } Then apply these variables to the general style: body { background-color: var(--bg-color); color: var(--text-color); } Structural recommendations: Concentrate variables in a file or block, such as _variables.css The variables related to the topic can be grouped by modules, such as color, font, margin, etc. Use naming specifications, such as --color-primary , --spacing-medium How to dynamically switch topics? If you want the user to click the button to switch topics, you can use JS to manipulate the class name of <html> or <body> . HTML example: <button id="theme-toggle">Switch theme</button> JS example: document.getElementById('theme-toggle').addEventListener('click', () => { document.documentElement.classList.toggle('dark'); }); This example will switch the dark class to activate the corresponding topic variable. You can also extend more theme classes, such as .blue-theme , .green-theme , and set different classes through JS to achieve multi-theme support. hint: You can use localStorage to remember the topics selected by the user Adding a transition effect during switching will be more friendly (such as fading in and out) Details to pay attention to in actual use Some details are easily overlooked, but they can affect the experience: Variable scope : Custom attributes are cascading, and children will inherit the variable value of the parent element. If you want to override, remember to check whether it is affected by other classes. Fallback value : When using a variable, you can add a default value, such as var(--text-color, #333) to prevent errors when the variable is undefined. Performance issues : Frequent modification of a large number of variables may cause redrawing and rearrangement, but there will be no problems with daily use. Compatibility : Modern browsers support CSS variables, but in old projects, you need to confirm whether the target environment supports it. Basically that's it. Making good use of CSS custom properties can make the theme system lighter and easier to maintain without introducing complex frameworks. As long as the structure is clear and the variables are classified reasonably, it is not difficult to maintain.The above is the detailed content of How to use CSS custom properties for theming tutorial. For more information, please follow other related articles on the PHP Chinese website! Statement of this Website The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn Hot AI Tools Undress AI Tool Undress images for free Undresser.AI Undress AI-powered app for creating realistic nude photos AI Clothes Remover Online AI tool for removing clothes from photos. Clothoff.io AI clothes remover Video Face Swap Swap faces in any video effortlessly with our completely free AI face swap tool! Show More Hot Article How to fix KB5060999 fails to install in Windows 11? 1 months ago By DDD Oguri Cap Build Guide | A Pretty Derby Musume 1 weeks ago By Jack chen Guide: Stellar Blade Save File Location/Save File Lost/Not Saving 3 weeks ago By DDD Dune: Awakening - Advanced Planetologist Quest Walkthrough 3 weeks ago By Jack chen Date Everything: Dirk And Harper Relationship Guide 3 weeks ago By Jack chen Show More Hot Tools Notepad++7.3.1 Easy-to-use and free code editor SublimeText3 Chinese version Chinese version, very easy to use Zend Studio 13.0.1 Powerful PHP integrated development environment Dreamweaver CS6 Visual web development tools SublimeText3 Mac version God-level code editing software (SublimeText3) Show More Hot Topics Where is the login entrance for gmail email? 8522 17 Java Tutorial 1747 16 CakePHP Tutorial 1600 56 Laravel Tutorial 1542 28 PHP Tutorial 1400 31 Show More Related knowledge What is 'render-blocking CSS'? Jun 24, 2025 am 12:42 AM CSS blocks page rendering because browsers view inline and external CSS as key resources by default, especially with imported stylesheets, header large amounts of inline CSS, and unoptimized media query styles. 1. Extract critical CSS and embed it into HTML; 2. Delay loading non-critical CSS through JavaScript; 3. Use media attributes to optimize loading such as print styles; 4. Compress and merge CSS to reduce requests. It is recommended to use tools to extract key CSS, combine rel="preload" asynchronous loading, and use media delayed loading reasonably to avoid excessive splitting and complex script control. How to use Lotties in Figma Jun 14, 2025 am 10:17 AM In the following tutorial, I will show you how to create Lottie animations in Figma. We'll use two colorful designs to exmplify how you can animate in Figma, and then I'll show you how to go from Figma to Lottie animations. All you need is a free Fig Breaking Boundaries: Building a Tangram Puzzle With (S)CSS Jun 13, 2025 am 11:33 AM We put it to the test and it turns out Sass can replace JavaScript, at least when it comes to low-level logic and puzzle behavior. With nothing but maps, mixins, functions, and a whole lot of math, we managed to bring our Tangram puzzle to life, no J External vs. Internal CSS: What's the Best Approach? Jun 20, 2025 am 12:45 AM ThebestapproachforCSSdependsontheproject'sspecificneeds.Forlargerprojects,externalCSSisbetterduetomaintainabilityandreusability;forsmallerprojectsorsingle-pageapplications,internalCSSmightbemoresuitable.It'scrucialtobalanceprojectsize,performanceneed Does my CSS must be on lower case? Jun 19, 2025 am 12:29 AM No,CSSdoesnothavetobeinlowercase.However,usinglowercaseisrecommendedfor:1)Consistencyandreadability,2)Avoidingerrorsinrelatedtechnologies,3)Potentialperformancebenefits,and4)Improvedcollaborationwithinteams. CSS Case Sensitivity: Understanding What Matters Jun 20, 2025 am 12:09 AM CSSismostlycase-insensitive,butURLsandfontfamilynamesarecase-sensitive.1)Propertiesandvalueslikecolor:red;arenotcase-sensitive.2)URLsmustmatchtheserver'scase,e.g.,/images/Logo.png.3)Fontfamilynameslike'OpenSans'mustbeexact. What is Autoprefixer and how does it work? Jul 02, 2025 am 01:15 AM Autoprefixer is a tool that automatically adds vendor prefixes to CSS attributes based on the target browser scope. 1. It solves the problem of manually maintaining prefixes with errors; 2. Work through the PostCSS plug-in form, parse CSS, analyze attributes that need to be prefixed, and generate code according to configuration; 3. The usage steps include installing plug-ins, setting browserslist, and enabling them in the build process; 4. Notes include not manually adding prefixes, keeping configuration updates, prefixes not all attributes, and it is recommended to use them with the preprocessor. What are CSS counters? Jun 19, 2025 am 12:34 AM CSScounterscanautomaticallynumbersectionsandlists.1)Usecounter-resettoinitialize,counter-incrementtoincrease,andcounter()orcounters()todisplayvalues.2)CombinewithJavaScriptfordynamiccontenttoensureaccurateupdates. See all articles <span id="vozn9"></span>
Some details are easily overlooked, but they can affect the experience:<\/p>\n
var(--text-color, #333)<\/code> to prevent errors when the variable is undefined.<\/li>\n Performance issues<\/strong> : Frequent modification of a large number of variables may cause redrawing and rearrangement, but there will be no problems with daily use.<\/li>\n Compatibility<\/strong> : Modern browsers support CSS variables, but in old projects, you need to confirm whether the target environment supports it.<\/li>\n<\/ul>\n\n Basically that's it. Making good use of CSS custom properties can make the theme system lighter and easier to maintain without introducing complex frameworks. As long as the structure is clear and the variables are classified reasonably, it is not difficult to maintain.<\/p>"} 国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂 Community Articles Topics Q&A Learn Course Programming Dictionary Tools Library Development tools Website Source Code PHP Libraries JS special effects Website Materials Extension plug-ins AI Tools Leisure Game Download Game Tutorials English 簡體中文 English 繁體中文 日本語 ??? Melayu Fran?ais Deutsch Login singup Table of Contents Why use CSS custom properties to make themes? How to organize topic variables? How to dynamically switch topics? Details to pay attention to in actual use Home Web Front-end CSS Tutorial How to use CSS custom properties for theming tutorial How to use CSS custom properties for theming tutorial 下次還敢 Jul 12, 2025 am 03:22 AM CSS custom properties are a flexible way to implement theme switching. It abstracts colors, fonts and other styles for easy management and dynamic modification. Compared to traditional multi-CSS files or preprocessor variables, CSS variables support runtime changes, suitable for dark mode and user-defined themes. It is recommended to define default variables in :root, create classes such as .dark for different topics, and toggle class names through JS to achieve dynamic topic switching. At the same time, you can use localStorage to remember user selections. Pay attention to variable scope, fallback value, performance and compatibility issues in details. Let’s talk about the key point directly: CSS custom properties (also called CSS variables) are a very flexible and maintainable way to implement topic switching. It allows you to abstract colors, fonts, spacing, etc. in styles, making it convenient for unified management and dynamic changes. Why use CSS custom properties to make themes? The traditional approach might be to write multiple CSS files, or use a preprocessor like Sass to define variables. But these methods are less convenient to switch topics at runtime. CSS custom attributes are effective at runtime and can be dynamically modified with JavaScript, which is very suitable for functions such as "dark mode" and "user custom theme". Advantages summary: Better maintainability Supports runtime modification No dependency on preprocessor Clear structure and clear hierarchy How to organize topic variables? The recommended approach is to define the default theme variable under :root , and then create additional classes for different themes (such as .dark ), so that you can change the theme by simply switching the class name. Example: :root { --bg-color: #ffffff; --text-color: #333333; } .dark { --bg-color: #121212; --text-color: #f1f1f1; } Then apply these variables to the general style: body { background-color: var(--bg-color); color: var(--text-color); } Structural recommendations: Concentrate variables in a file or block, such as _variables.css The variables related to the topic can be grouped by modules, such as color, font, margin, etc. Use naming specifications, such as --color-primary , --spacing-medium How to dynamically switch topics? If you want the user to click the button to switch topics, you can use JS to manipulate the class name of <html> or <body> . HTML example: <button id="theme-toggle">Switch theme</button> JS example: document.getElementById('theme-toggle').addEventListener('click', () => { document.documentElement.classList.toggle('dark'); }); This example will switch the dark class to activate the corresponding topic variable. You can also extend more theme classes, such as .blue-theme , .green-theme , and set different classes through JS to achieve multi-theme support. hint: You can use localStorage to remember the topics selected by the user Adding a transition effect during switching will be more friendly (such as fading in and out) Details to pay attention to in actual use Some details are easily overlooked, but they can affect the experience: Variable scope : Custom attributes are cascading, and children will inherit the variable value of the parent element. If you want to override, remember to check whether it is affected by other classes. Fallback value : When using a variable, you can add a default value, such as var(--text-color, #333) to prevent errors when the variable is undefined. Performance issues : Frequent modification of a large number of variables may cause redrawing and rearrangement, but there will be no problems with daily use. Compatibility : Modern browsers support CSS variables, but in old projects, you need to confirm whether the target environment supports it. Basically that's it. Making good use of CSS custom properties can make the theme system lighter and easier to maintain without introducing complex frameworks. As long as the structure is clear and the variables are classified reasonably, it is not difficult to maintain.The above is the detailed content of How to use CSS custom properties for theming tutorial. For more information, please follow other related articles on the PHP Chinese website! Statement of this Website The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn Hot AI Tools Undress AI Tool Undress images for free Undresser.AI Undress AI-powered app for creating realistic nude photos AI Clothes Remover Online AI tool for removing clothes from photos. Clothoff.io AI clothes remover Video Face Swap Swap faces in any video effortlessly with our completely free AI face swap tool! Show More Hot Article How to fix KB5060999 fails to install in Windows 11? 1 months ago By DDD Oguri Cap Build Guide | A Pretty Derby Musume 1 weeks ago By Jack chen Guide: Stellar Blade Save File Location/Save File Lost/Not Saving 3 weeks ago By DDD Dune: Awakening - Advanced Planetologist Quest Walkthrough 3 weeks ago By Jack chen Date Everything: Dirk And Harper Relationship Guide 3 weeks ago By Jack chen Show More Hot Tools Notepad++7.3.1 Easy-to-use and free code editor SublimeText3 Chinese version Chinese version, very easy to use Zend Studio 13.0.1 Powerful PHP integrated development environment Dreamweaver CS6 Visual web development tools SublimeText3 Mac version God-level code editing software (SublimeText3) Show More Hot Topics Where is the login entrance for gmail email? 8522 17 Java Tutorial 1747 16 CakePHP Tutorial 1600 56 Laravel Tutorial 1542 28 PHP Tutorial 1400 31 Show More Related knowledge What is 'render-blocking CSS'? Jun 24, 2025 am 12:42 AM CSS blocks page rendering because browsers view inline and external CSS as key resources by default, especially with imported stylesheets, header large amounts of inline CSS, and unoptimized media query styles. 1. Extract critical CSS and embed it into HTML; 2. Delay loading non-critical CSS through JavaScript; 3. Use media attributes to optimize loading such as print styles; 4. Compress and merge CSS to reduce requests. It is recommended to use tools to extract key CSS, combine rel="preload" asynchronous loading, and use media delayed loading reasonably to avoid excessive splitting and complex script control. How to use Lotties in Figma Jun 14, 2025 am 10:17 AM In the following tutorial, I will show you how to create Lottie animations in Figma. We'll use two colorful designs to exmplify how you can animate in Figma, and then I'll show you how to go from Figma to Lottie animations. All you need is a free Fig Breaking Boundaries: Building a Tangram Puzzle With (S)CSS Jun 13, 2025 am 11:33 AM We put it to the test and it turns out Sass can replace JavaScript, at least when it comes to low-level logic and puzzle behavior. With nothing but maps, mixins, functions, and a whole lot of math, we managed to bring our Tangram puzzle to life, no J External vs. Internal CSS: What's the Best Approach? Jun 20, 2025 am 12:45 AM ThebestapproachforCSSdependsontheproject'sspecificneeds.Forlargerprojects,externalCSSisbetterduetomaintainabilityandreusability;forsmallerprojectsorsingle-pageapplications,internalCSSmightbemoresuitable.It'scrucialtobalanceprojectsize,performanceneed Does my CSS must be on lower case? Jun 19, 2025 am 12:29 AM No,CSSdoesnothavetobeinlowercase.However,usinglowercaseisrecommendedfor:1)Consistencyandreadability,2)Avoidingerrorsinrelatedtechnologies,3)Potentialperformancebenefits,and4)Improvedcollaborationwithinteams. CSS Case Sensitivity: Understanding What Matters Jun 20, 2025 am 12:09 AM CSSismostlycase-insensitive,butURLsandfontfamilynamesarecase-sensitive.1)Propertiesandvalueslikecolor:red;arenotcase-sensitive.2)URLsmustmatchtheserver'scase,e.g.,/images/Logo.png.3)Fontfamilynameslike'OpenSans'mustbeexact. What is Autoprefixer and how does it work? Jul 02, 2025 am 01:15 AM Autoprefixer is a tool that automatically adds vendor prefixes to CSS attributes based on the target browser scope. 1. It solves the problem of manually maintaining prefixes with errors; 2. Work through the PostCSS plug-in form, parse CSS, analyze attributes that need to be prefixed, and generate code according to configuration; 3. The usage steps include installing plug-ins, setting browserslist, and enabling them in the build process; 4. Notes include not manually adding prefixes, keeping configuration updates, prefixes not all attributes, and it is recommended to use them with the preprocessor. What are CSS counters? Jun 19, 2025 am 12:34 AM CSScounterscanautomaticallynumbersectionsandlists.1)Usecounter-resettoinitialize,counter-incrementtoincrease,andcounter()orcounters()todisplayvalues.2)CombinewithJavaScriptfordynamiccontenttoensureaccurateupdates. See all articles <span id="vozn9"></span>
Basically that's it. Making good use of CSS custom properties can make the theme system lighter and easier to maintain without introducing complex frameworks. As long as the structure is clear and the variables are classified reasonably, it is not difficult to maintain.<\/p>"}
CSS custom properties are a flexible way to implement theme switching. It abstracts colors, fonts and other styles for easy management and dynamic modification. Compared to traditional multi-CSS files or preprocessor variables, CSS variables support runtime changes, suitable for dark mode and user-defined themes. It is recommended to define default variables in :root, create classes such as .dark for different topics, and toggle class names through JS to achieve dynamic topic switching. At the same time, you can use localStorage to remember user selections. Pay attention to variable scope, fallback value, performance and compatibility issues in details.
Let’s talk about the key point directly: CSS custom properties (also called CSS variables) are a very flexible and maintainable way to implement topic switching. It allows you to abstract colors, fonts, spacing, etc. in styles, making it convenient for unified management and dynamic changes.
The traditional approach might be to write multiple CSS files, or use a preprocessor like Sass to define variables. But these methods are less convenient to switch topics at runtime.
CSS custom attributes are effective at runtime and can be dynamically modified with JavaScript, which is very suitable for functions such as "dark mode" and "user custom theme".
Advantages summary:
The recommended approach is to define the default theme variable under :root , and then create additional classes for different themes (such as .dark ), so that you can change the theme by simply switching the class name.
:root
.dark
Example:
:root { --bg-color: #ffffff; --text-color: #333333; } .dark { --bg-color: #121212; --text-color: #f1f1f1; }
Then apply these variables to the general style:
body { background-color: var(--bg-color); color: var(--text-color); }
Structural recommendations:
_variables.css
--color-primary
--spacing-medium
If you want the user to click the button to switch topics, you can use JS to manipulate the class name of <html> or <body> .
<html>
<body>
HTML example:
<button id="theme-toggle">Switch theme</button>
JS example:
document.getElementById('theme-toggle').addEventListener('click', () => { document.documentElement.classList.toggle('dark'); });
This example will switch the dark class to activate the corresponding topic variable.
dark
You can also extend more theme classes, such as .blue-theme , .green-theme , and set different classes through JS to achieve multi-theme support.
.blue-theme
.green-theme
hint:
localStorage
Some details are easily overlooked, but they can affect the experience:
var(--text-color, #333)
Basically that's it. Making good use of CSS custom properties can make the theme system lighter and easier to maintain without introducing complex frameworks. As long as the structure is clear and the variables are classified reasonably, it is not difficult to maintain.
The above is the detailed content of How to use CSS custom properties for theming tutorial. For more information, please follow other related articles on the PHP Chinese website!
Undress images for free
AI-powered app for creating realistic nude photos
Online AI tool for removing clothes from photos.
AI clothes remover
Swap faces in any video effortlessly with our completely free AI face swap tool!
Easy-to-use and free code editor
Chinese version, very easy to use
Powerful PHP integrated development environment
Visual web development tools
God-level code editing software (SublimeText3)
CSS blocks page rendering because browsers view inline and external CSS as key resources by default, especially with imported stylesheets, header large amounts of inline CSS, and unoptimized media query styles. 1. Extract critical CSS and embed it into HTML; 2. Delay loading non-critical CSS through JavaScript; 3. Use media attributes to optimize loading such as print styles; 4. Compress and merge CSS to reduce requests. It is recommended to use tools to extract key CSS, combine rel="preload" asynchronous loading, and use media delayed loading reasonably to avoid excessive splitting and complex script control.
In the following tutorial, I will show you how to create Lottie animations in Figma. We'll use two colorful designs to exmplify how you can animate in Figma, and then I'll show you how to go from Figma to Lottie animations. All you need is a free Fig
We put it to the test and it turns out Sass can replace JavaScript, at least when it comes to low-level logic and puzzle behavior. With nothing but maps, mixins, functions, and a whole lot of math, we managed to bring our Tangram puzzle to life, no J
ThebestapproachforCSSdependsontheproject'sspecificneeds.Forlargerprojects,externalCSSisbetterduetomaintainabilityandreusability;forsmallerprojectsorsingle-pageapplications,internalCSSmightbemoresuitable.It'scrucialtobalanceprojectsize,performanceneed
No,CSSdoesnothavetobeinlowercase.However,usinglowercaseisrecommendedfor:1)Consistencyandreadability,2)Avoidingerrorsinrelatedtechnologies,3)Potentialperformancebenefits,and4)Improvedcollaborationwithinteams.
CSSismostlycase-insensitive,butURLsandfontfamilynamesarecase-sensitive.1)Propertiesandvalueslikecolor:red;arenotcase-sensitive.2)URLsmustmatchtheserver'scase,e.g.,/images/Logo.png.3)Fontfamilynameslike'OpenSans'mustbeexact.
Autoprefixer is a tool that automatically adds vendor prefixes to CSS attributes based on the target browser scope. 1. It solves the problem of manually maintaining prefixes with errors; 2. Work through the PostCSS plug-in form, parse CSS, analyze attributes that need to be prefixed, and generate code according to configuration; 3. The usage steps include installing plug-ins, setting browserslist, and enabling them in the build process; 4. Notes include not manually adding prefixes, keeping configuration updates, prefixes not all attributes, and it is recommended to use them with the preprocessor.
CSScounterscanautomaticallynumbersectionsandlists.1)Usecounter-resettoinitialize,counter-incrementtoincrease,andcounter()orcounters()todisplayvalues.2)CombinewithJavaScriptfordynamiccontenttoensureaccurateupdates.