<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>盒子模型的应用</title> <link href="index.css" type="text/css" rel="stylesheet"></head><body> <div class="top"> <div class="top_content"></div> </div> <div class="body"> <div class="body_img"></div> <div class="body_content"> <div class="body_no"></div> </div> </div> <div class="footing"> <div class="footing_content"></div> <div class="footing_subSav"></div> </div></body></html>
*{ margin: 0px; padding: 0px;}.top{ width: 100%; height: 50px; background-color: black;}.top_content{ width: 75%; height: 50px; margin: 0px auto; background-color: blue;}.body{ margin: 20px auto; width: 75%; height: 1500px; background-color: blanchedalmond;}.body_img{ width:100%; height: 400px; background-color: darkorange;}.body_content{ width: 100%; height: 1100px; background-color: blueviolet;}.body_no{ width: 100%; height: 50px; background-color: aqua;}.footing{ width: 75%; height: 400px; background-color: indigo; margin: 0px auto;}.footing_content{ width: 100%; height: 300px; background-color: darkseagreen;}.footing_subSav{ width: 100%; height: 100px; background-color: black;}

HTMLisnotaprogramminglanguage;itisamarkuplanguage.1)HTMLstructuresandformatswebcontentusingtags.2)ItworkswithCSSforstylingandJavaScriptforinteractivity,enhancingwebdevelopment.

HTML is the cornerstone of building web page structure. 1. HTML defines the content structure and semantics, and uses, etc. tags. 2. Provide semantic markers, such as, etc., to improve SEO effect. 3. To realize user interaction through tags, pay attention to form verification. 4. Use advanced elements such as, combined with JavaScript to achieve dynamic effects. 5. Common errors include unclosed labels and unquoted attribute values, and verification tools are required. 6. Optimization strategies include reducing HTTP requests, compressing HTML, using semantic tags, etc.

HTML is a language used to build web pages, defining web page structure and content through tags and attributes. 1) HTML organizes document structure through tags, such as,. 2) The browser parses HTML to build the DOM and renders the web page. 3) New features of HTML5, such as, enhance multimedia functions. 4) Common errors include unclosed labels and unquoted attribute values. 5) Optimization suggestions include using semantic tags and reducing file size.

WebdevelopmentreliesonHTML,CSS,andJavaScript:1)HTMLstructurescontent,2)CSSstylesit,and3)JavaScriptaddsinteractivity,formingthebasisofmodernwebexperiences.

The role of HTML is to define the structure and content of a web page through tags and attributes. 1. HTML organizes content through tags such as , making it easy to read and understand. 2. Use semantic tags such as, etc. to enhance accessibility and SEO. 3. Optimizing HTML code can improve web page loading speed and user experience.

HTMLisaspecifictypeofcodefocusedonstructuringwebcontent,while"code"broadlyincludeslanguageslikeJavaScriptandPythonforfunctionality.1)HTMLdefineswebpagestructureusingtags.2)"Code"encompassesawiderrangeoflanguagesforlogicandinteract

HTML, CSS and JavaScript are the three pillars of web development. 1. HTML defines the web page structure and uses tags such as, etc. 2. CSS controls the web page style, using selectors and attributes such as color, font-size, etc. 3. JavaScript realizes dynamic effects and interaction, through event monitoring and DOM operations.

HTML defines the web structure, CSS is responsible for style and layout, and JavaScript gives dynamic interaction. The three perform their duties in web development and jointly build a colorful website.


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