CSS common layout arrangement_html/css_WEB-ITnose
Fixed width layout
1-2-1 layout (floating)
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>固定宽度</title><style type="text/css">div ,p, h2 { margin: 2px; padding: 5px;}#container { width: 612px; margin: 10px auto;}#header,#footer { width: 596px; border: 1px solid blue;} #content { float: left; width: 360px; border: 1px solid blue;}#side { float: left; width: 220px; border: 1px solid blue;}#footer { clear: both;}</style></head><body><div id="container"> <div id="header"> <h2>Page Header</h2> </div> <div id="content"> <h2>Page Content 1</h2> <p>对于一个网页设计者来说,HTML语言一定不会感到陌生,因为它是所有网页制作的基础。但是如果希望网页能够美观、大方,并且升级方便,维护轻松,那么仅仅HTML是不够的,CSS在这中间扮演着重要的角色。</p> </div> <div id="side"> <h2>Side Bar 1</h2> <p>对于一个网页设计者来说,HTML语言一定不会感到陌生。</p> </div> <div id="footer"> <h2>Page Footer</h2> <p>这是一行文本,这里作为样例,显示在布局框中。</p> </div></div></body></html>
Rendering:
The two divs in the middle are floated, and the width of the containing block is a fixed value. Footer clears the float to prevent the floating block from covering it.
1-2-1 layout (absolute positioning)
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>固定宽度</title><style type="text/css">div ,p, h2 { margin: 2px; padding: 5px;}#container { width: 612px; margin: 10px auto; position:relative;}#header,#footer { width: 612px; border: 1px solid blue;} #content { margin-left: 226px; width: 360px; border: 1px solid blue;}#side { position: absolute; width: 220px; border: 1px solid blue; left:0; top:3px;}</style></head><body><div id="header"> <h2>Page Header</h2></div><div id="container"> <div id="content"> <h2>Page Content 1</h2> <p>对于一个网页设计者来说,HTML语言一定不会感到陌生,因为它是所有网页制作的基础。但是如果希望网页能够美观、大方,并且升级方便,维护轻松,那么仅仅HTML是不够的,CSS在这中间扮演着重要的角色。</p> </div> <div id="side"> <h2>Side Bar 1</h2> <p>对于一个网页设计者来说,HTML语言一定不会感到陌生。</p> </div></div><div id="footer"> <h2>Page Footer</h2> <p>这是一行文本,这里作为样例,显示在布局框中。</p></div></body></html>
Rendering:

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

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)

Hot Topics











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

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.

The roles of HTML, CSS and JavaScript in web development are: 1. HTML defines the web page structure, 2. CSS controls the web page style, and 3. JavaScript adds dynamic behavior. Together, they build the framework, aesthetics and interactivity of modern websites.

The future trends of HTML are semantics and web components, the future trends of CSS are CSS-in-JS and CSSHoudini, and the future trends of JavaScript are WebAssembly and Serverless. 1. HTML semantics improve accessibility and SEO effects, and Web components improve development efficiency, but attention should be paid to browser compatibility. 2. CSS-in-JS enhances style management flexibility but may increase file size. CSSHoudini allows direct operation of CSS rendering. 3.WebAssembly optimizes browser application performance but has a steep learning curve, and Serverless simplifies development but requires optimization of cold start problems.

The future of HTML is full of infinite possibilities. 1) New features and standards will include more semantic tags and the popularity of WebComponents. 2) The web design trend will continue to develop towards responsive and accessible design. 3) Performance optimization will improve the user experience through responsive image loading and lazy loading technologies.

The roles of HTML, CSS and JavaScript in web development are: HTML is responsible for content structure, CSS is responsible for style, and JavaScript is responsible for dynamic behavior. 1. HTML defines the web page structure and content through tags to ensure semantics. 2. CSS controls the web page style through selectors and attributes to make it beautiful and easy to read. 3. JavaScript controls web page behavior through scripts to achieve dynamic and interactive functions.

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.

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.
