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.

ToimplementdarkmodeinCSSeffectively,useCSSvariablesforthemecolors,detectsystempreferenceswithprefers-color-scheme,addamanualtogglebutton,andhandleimagesandbackgroundsthoughtfully.1.DefineCSSvariablesforlightanddarkthemestomanagecolorsefficiently.2.Us

The topic differencebetweenem, Rem, PX, andViewportunits (VH, VW) LiesintheirreFerencepoint: PXISFixedandbasedonpixelvalues, emissrelative EtothefontsizeFheelementoritsparent, Remisrelelatotherootfontsize, AndVH/VwarebaseDontheviewporttimensions.1.PXoffersprecis

ThebestapproachforCSSdependsontheproject'sspecificneeds.Forlargerprojects,externalCSSisbetterduetomaintainabilityandreusability;forsmallerprojectsorsingle-pageapplications,internalCSSmightbemoresuitable.It'scrucialtobalanceprojectsize,performanceneed

The latest version of Huobi App download tutorial is as follows: Step 1, visit Huobi official website, confirm the correctness of the URL and select the official website in the region; Step 2, find the app download portal, and select the Android version or iOS version according to the mobile operating system; Step 3, choose the download method, including scanning the QR code, directly downloading the installation package or jumping to the app store to download; Step 4, install the app. If it is the installation package, you need to allow the installation of applications from unknown sources. If it is an app store, click to install; Step 5, open the App to log in to the account, and if it is an account, you can register a new account if you don’t have an account. Frequently asked questions include: if the network is unstable, the system is upgraded or the old version is downloaded, the file is damaged, and the application store cannot be searched.

To find the official online portal of Ouyi, please check the SSL certificate, obtain links through official social media or partners, and avoid clicking on ads or links sent by strangers; when downloading the Android version of the app, you need to download it through the official website and follow the steps; when encountering installation problems, you can check the network, storage space, system version, etc.; when using the app, you should set a strong password, turn on 2FA, protect the private key, and be wary of phishing information. 1. Confirm the security of the domain name and SSL certificate when accessing the official website; 2. Pay attention to the latest links published by the official channel; 3. Do not click on the ad link at will through search engines; 4. Ensure that the source is reliable and allow installation from unknown sources when downloading Android; 5. If the installation fails, try to clear the cache or restart the phone; 6. In terms of account security, complex passwords must be set and dual-enabled

Choosing the correct display value in CSS is crucial because it controls the behavior of elements in the layout. 1.inline: Make elements flow like text, without occupying a single line, and cannot directly set width and height, suitable for elements in text, such as; 2.block: Make elements exclusively occupy one line and occupy all width, can set width and height and inner and outer margins, suitable for structured elements, such as; 3.inline-block: has both block characteristics and inline layout, can set size but still display in the same line, suitable for horizontal layouts that require consistent spacing; 4.flex: Modern layout mode, suitable for containers, easy to achieve alignment and distribution through justify-content, align-items and other attributes, yes

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.