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

current location：Home > Technical Articles > Daily Programming > HTML Knowledge

  • How to add and style a blockquote in HTML?
    How to add and style a blockquote in HTML?
    Using HTML blockquote tags can effectively highlight the referenced content and beautify the style with CSS. 1. The basic usage is to wrap the quotation content in the tag, and the browser will add indentation by default; 2. Set properties such as margin, padding, border, color, etc. through CSS, which can make the quotation more eye-catching; 3. You can indicate the source in combination with the tag, and enhance the sense of hierarchy through right alignment and other styles; 4. Appropriately adjust the font, background color and spacing, so that the quotation block style can be unified and easy to read.
    HTML Tutorial . Web Front-end 841 2025-07-12 02:10:32
  • What is the theme-color meta tag?
    What is the theme-color meta tag?
    Theme color meta tags are used to control the display color of the browser address bar or task switcher on mobile devices, improving brand consistency and user experience. It is set by adding to the HTML header, so that the browser UI coordinates with the website theme color, especially when using bookmarks or "Add to Home Screen" on Android devices. Its functions include: 1. Improve visual consistency; 2. Strengthen brand recognition; 3. Improve PWA experience. Best practices include: matching website design, testing on real devices, and adapting to the depth and pattern.
    HTML Tutorial . Web Front-end 344 2025-07-12 01:48:22
  • What is the difference between input type='submit' and ?
    What is the difference between input type='submit' and ?
    It is used to submit a form, and the form submission behavior will be automatically triggered when clicked; it is a normal button, and functions need to be defined through JavaScript. 1. The submit type sends data to the server by default in the form, and the submission function can be realized without additional code; 2. The button type has no default behavior and is usually used for front-end interactions such as pop-ups, verification, etc.; 3. Using submit may cause page jumps or refreshes, while buttons are more suitable for executing scripts to avoid unexpected submissions; 4. In framework development, the purpose of the two should be clearly distinguished to reduce debugging costs. Choosing the correct button type can help improve development efficiency and user experience.
    HTML Tutorial . Web Front-end 628 2025-07-12 01:31:01
  • What is the difference between an HTML element and an HTML tag?
    What is the difference between an HTML element and an HTML tag?
    The difference between HTML elements and HTML tags is: 1. HTML tags are syntax structures in the code, used to define elements, such as and; 2. HTML elements are objects generated by the browser after parsing the tag, including tags, contents and attributes. Tags are text characters used when writing HTML, while elements are actual objects formed when the browser builds a document structure (DOM) and interact with elements during JavaScript operations or CSS-style applications. Understanding this difference helps avoid confusion in debugging and technical discussions.
    HTML Tutorial . Web Front-end 484 2025-07-12 01:27:11
  • What is the target='_blank' attribute in HTML and when to use it?
    What is the target='_blank' attribute in HTML and when to use it?
    When using target="_blank" you should use target="_blank" to stay on the current page, such as jumping to external websites, opening non-web content, or avoiding interruption of the process; precautions include adding rel="noopener" to prevent security vulnerabilities and avoiding abuse to affect navigation and accessibility; misuse scenarios include internal links to open new pages, lack of security attributes, and multi-label explosions; alternatives can be used to pop-up windows, dynamic loading or explicitly prompting users.
    HTML Tutorial . Web Front-end 480 2025-07-12 01:26:42
  • What is the http-equiv attribute in a meta tag used for?
    What is the http-equiv attribute in a meta tag used for?
    Thehttp-equivattributeinatagsimulatesHTTPresponseheaderstocontrolbrowserbehaviorwhenserveraccessisunavailable.1.ItcansetcharacterencodingviaContent-Type,suchasUTF-8,thoughHTML5'sisshorter.2.Itsupportspagerefreshorredirectionusingrefresh,likewaiting5s
    HTML Tutorial . Web Front-end 837 2025-07-12 01:26:22
  • What are Twitter Card meta tags?
    What are Twitter Card meta tags?
    TwitterCardmetatagsareHTMLcodesnippetsthatcontrolhowlinksappearwhensharedonTwitter.1.Theyenablerichcontentpreviewswithtitles,descriptions,andimages.2.CommontypesincludeSummaryCard,SummaryCardwithLargeImage,AppCard,andPlayerCard.3.Essentialtagsaretwit
    HTML Tutorial . Web Front-end 532 2025-07-12 01:18:11
  • What is the HTML inert attribute?
    What is the HTML inert attribute?
    TheinertattributeinHTMLmakeselementsnon-interactiveandinaccessibletousers.1.Itpreventsfocus,clicks,textselection,andscreenreaderaccess.2.Itisusefulformodals,tabbedinterfaces,loadingstates,andconditionalUIs.3.Browsersupportislimited,especiallyinSafari
    HTML Tutorial . Web Front-end 299 2025-07-12 01:11:12
  • How to create a sticky header or footer in HTML?
    How to create a sticky header or footer in HTML?
    To enable the navigation bar or bottom information in a web page to always display on the screen, use CSS' position:sticky. 1. You need to set position:sticky and top:0 to create StickyHeader, and make sure that the parent element has no overflow:hidden restrictions. It is also recommended to set background color and z-index to avoid content being exposed and overwritten; 2. Use position:sticky and bottom:0 to create StickyFooter, but if you want the footer to be fixed at the bottom of the screen regardless of the length of the content, you should use position:fixed; 3. If sticky is invalid, common reasons include not setting
    HTML Tutorial . Web Front-end 899 2025-07-12 00:56:32
  • Implementing Native Lazy Loading for Images in HTML
    Implementing Native Lazy Loading for Images in HTML
    Native lazy loading is a built-in browser function that enables lazy loading of pictures by adding loading="lazy" attribute to the tag. 1. It does not require JavaScript or third-party libraries, and is used directly in HTML; 2. It is suitable for pictures that are not displayed on the first screen below the page, picture gallery scrolling add-ons and large picture resources; 3. It is not suitable for pictures with first screen or display:none; 4. When using it, a suitable placeholder should be set to avoid layout jitter; 5. It should optimize responsive image loading in combination with srcset and sizes attributes; 6. Compatibility issues need to be considered. Some old browsers do not support it. They can be used through feature detection and combined with JavaScript solutions.
    HTML Tutorial . Web Front-end 822 2025-07-12 00:48:31
  • How to add an image in HTML
    How to add an image in HTML
    To display images on web pages, use the HTML img tag, the syntax is: imgsrc="image path" alt="alternative text". 1. The src attribute specifies the image path, supports relative paths or absolute URLs; 2. The alt attribute is used for alternative text when the image cannot be loaded and improves barrier-free access; 3. You can set the size through width and height, or use CSS to control the style more flexibly; 4. Other common attributes include title (prompt text), loading="lazy" (lazy loading), class or id (with CSS); 5. It is recommended to use .jpg and .png
    HTML Tutorial . Web Front-end 432 2025-07-12 00:28:22
  • Implementing Responsive Images with the HTML srcset and sizes Attributes
    Implementing Responsive Images with the HTML srcset and sizes Attributes
    srcset and sizes are key properties for HTML implementation of responsive images. srcset provides multiple image sources and their width or pixel density, such as 400w and 800w, and the browser selects the appropriate image accordingly; sizes defines the display width of the image under different screen widths, such as (max-width: 600px)100vw, 50vw, so that the browser can more accurately match the image size. In actual use, you need to prepare multi-size pictures, clearly named, design layout in accordance with media query, and test the performance of the equipment to avoid ignoring sizes or unit errors, thereby saving bandwidth and improving performance.
    HTML Tutorial . Web Front-end 856 2025-07-12 00:15:11
  • What is the difference between an element, a tag, and an attribute?
    What is the difference between an element, a tag, and an attribute?
    InHTML,elements,tags,andattributesaredistinctbutrelatedconcepts.1.Anelementisthecompletestructure,consistingofanopeningtag,content,andaclosingtag,suchasThisisaparagraph..2.Tagsaretheactualcodeusedtodefineelements,includingopeningtagslikeandclosingtag
    HTML Tutorial . Web Front-end 650 2025-07-12 00:11:21
  • What is the value attribute for a list item () in an ordered list?
    What is the value attribute for a list item () in an ordered list?
    The labels in ordered list() use the value attribute to customize the number of list items. 1. By default, the browser automatically numberes according to the location; 2. Use value to override this behavior, which is suitable for list paging, dynamic content or scenes where fixed numbers are required; 3. Once the value of an item is set, subsequent items will be incremented based on this value; 4. The value must be a positive integer, which is only valid in it, does not affect the style, and compatibility should be tested with caution.
    HTML Tutorial . Web Front-end 791 2025-07-12 00:05:12

Tool Recommendations

jQuery enterprise message form contact code

jQuery enterprise message form contact code is a simple and practical enterprise message form and contact us introduction page code.
form button
2024-02-29

HTML5 MP3 music box playback effects

HTML5 MP3 music box playback special effect is an mp3 music player based on HTML5 css3 to create cute music box emoticons and click the switch button.

HTML5 cool particle animation navigation menu special effects

HTML5 cool particle animation navigation menu special effect is a special effect that changes color when the navigation menu is hovered by the mouse.
Menu navigation
2024-02-29

jQuery visual form drag and drop editing code

jQuery visual form drag and drop editing code is a visual form based on jQuery and bootstrap framework.
form button
2024-02-29

Organic fruit and vegetable supplier web template Bootstrap5

An organic fruit and vegetable supplier web template-Bootstrap5
Bootstrap template
2023-02-03

Bootstrap3 multifunctional data information background management responsive web page template-Novus

Bootstrap3 multifunctional data information background management responsive web page template-Novus
backend template
2023-02-02

Real estate resource service platform web page template Bootstrap5

Real estate resource service platform web page template Bootstrap5
Bootstrap template
2023-02-02

Simple resume information web template Bootstrap4

Simple resume information web template Bootstrap4
Bootstrap template
2023-02-02

Cute summer elements vector material (EPS PNG)

This is a cute summer element vector material, including the sun, sun hat, coconut tree, bikini, airplane, watermelon, ice cream, ice cream, cold drink, swimming ring, flip-flops, pineapple, conch, shell, starfish, crab, Lemons, sunscreen, sunglasses, etc., the materials are provided in EPS and PNG formats, including JPG previews.
PNG material
2024-05-09

Four red 2023 graduation badges vector material (AI EPS PNG)

This is a red 2023 graduation badge vector material, four in total, available in AI, EPS and PNG formats, including JPG preview.
PNG material
2024-02-29

Singing bird and cart filled with flowers design spring banner vector material (AI EPS)

This is a spring banner vector material designed with singing birds and a cart full of flowers. It is available in AI and EPS formats, including JPG preview.
banner picture
2024-02-29

Golden graduation cap vector material (EPS PNG)

This is a golden graduation cap vector material, available in EPS and PNG formats, including JPG preview.
PNG material
2024-02-27

Home Decor Cleaning and Repair Service Company Website Template

Home Decoration Cleaning and Maintenance Service Company Website Template is a website template download suitable for promotional websites that provide home decoration, cleaning, maintenance and other service organizations. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-05-09

Fresh color personal resume guide page template

Fresh color matching personal job application resume guide page template is a personal job search resume work display guide page web template download suitable for fresh color matching style. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-29

Designer Creative Job Resume Web Template

Designer Creative Job Resume Web Template is a downloadable web template for personal job resume display suitable for various designer positions. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-28

Modern engineering construction company website template

The modern engineering and construction company website template is a downloadable website template suitable for promotion of the engineering and construction service industry. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-28