The reason we use semantic tags is that they improve SEO, enhance accessibility, and code maintainability. 1. Include titles when using them to avoid abuse. 2. Use stand-alone content blocks, suitable for blogs or news. 3. Pay attention to the nesting and SEO of tags, and do not pile up tags for SEO.

There are five ways to include CSS in React: 1. Use inline styles, which are simple but not conducive to reuse and maintenance; 2. Use CSS files, which are implemented through import, which are conducive to organization but may lead to conflicts; 3. Use CSSModules to avoid global conflicts but require configuration; 4. Use StyledComponents to dynamically generate styles using JavaScript but require dependency on libraries; 5. Use Sass or Less to provide more functions but increase construction complexity.

There are three ways to selectively include CSS on a specific page: 1. Inline CSS, suitable for pages that are not frequently accessed or require unique styles; 2. Load external CSS files using JavaScript conditions, suitable for situations where flexibility is required; 3. Containment on the server side, suitable for scenarios using server-side languages. This approach can optimize website performance and maintainability, but requires balance of modularity and performance.

ThedifferentmethodsforincludingCSSinawebpageareinline,internal,andexternalCSS.1)InlineCSS:Easytoimplementbutleadstounmaintainablecode.2)InternalCSS:MoreorganizedthaninlinebutcanclutterHTML.3)ExternalCSS:Bestforlargerprojects,promotesmaintainabilityan

HTML, CSS and JavaScript are responsible for structure, style and dynamic functions in web development respectively. 1. HTML defines the web structure, 2. CSS is responsible for style and layout, 3. JavaScript provides dynamic interaction and functions.

ThebestpracticesforincludingCSSinawebsiteare:1)UseexternalCSSforseparationofcontentandpresentation,reusability,andcachingbenefits.2)ConsiderusingCSSpreprocessorslikeSassorLessformodularity.3)OptimizeperformancewithCSSminificationandcompression.4)Stru

CSSismostlycase-insensitive,butselectorsandcustompropertiesarecase-sensitive.1)Useconsistentcasingconventions.2)EmploylinterslikeStylelint.3)Testacrossbrowsers.4)Bemindfulofexternalresources'conventions.Consistentcasinghelpsmaintaincodecleanlinessand

The overflow attribute handles overflow content by hiding, scrolling or automatically adjusting. The main values ??include 1. Hidden direct cropping; 2. Scroll always displays scroll bars; 3. Auto displays scroll bars as needed; 4. Overflow-x and overflow-y can control horizontal and vertical overflow respectively. 1. overflow:hidden is used to avoid overflow of content; 2. overflow:scroll is suitable for chat windows or fixed-size sidebars to keep the interface consistent; 3. overflow:auto is suitable for tables or user-generated content to achieve flexible scrolling; 4. Note when setting overflow-x and overflow-y independently