CSS两列及三列自适应布局方法整理_html/css_WEB-ITnose
在传统方法的基础上加入了Flex布局并阐述各方法的优缺点，希望对大家有所帮助。先上目录：
- 两列布局：左侧定宽，右侧自适应
- 方法一：利用float和负外边距
- 方法二：利用外边距
- 方法三：利用position
- 方法四：利用flex布局
- 三列布局：左右定款，中间自适应。
- 方法一：使用负外边距
- 方法二：使用绝对定位
- 方法三：使用flex布局
两列布局：左侧定宽，右侧自适应
方法一：利用float和负外边距
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Document</title> <style> *{ margin: 0; padding: 0; } .main,.sitebar{ font: bolder 20px/300px; } .main{ width: 100%; float: left; } .main .content{ margin-left: 200px; background-color: red; } .sitebar{ width: 200px; float: left; background-color: green; margin-left: -100%; } </style></head><body> <div class="main"> <div class="content">右侧主体自适应区块</div> </div> <div class="sitebar">左侧定宽200px区块</div></body></html>-
优点：考虑了页面优化，右侧主内容区先加载，左侧后加载。
-
缺点：多添加了一层div包裹。
方法二：利用外边距
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Document</title> <style> *{ margin: 0; padding: 0; } .sitebar{ float: left; width: 200px; background-color: green; } .content{ background-color: red; margin-left: 200px; } </style></head><body> <div class="sitebar">左侧定宽200px区块</div> <div class="content">右侧主体自适应区块</div></body></html>-
优点：代码简洁，便于理解
-
缺点：不利于页面优化，右侧主内容区后加载
方法三：利用position
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Document</title> <style> *{ margin: 0; padding: 0; } .sitebar{ width: 200px; background-color: green; } .content{ position: absolute; left: 200px; right: 0; top: 0; background-color: red; } </style></head><body> <div class="content">右侧主体自适应区块</div> <div class="sitebar">左侧定宽200px区块</div></body></html>-
优点：考虑到了页面优化，右侧内容区先加载
-
缺点：暂时没想到。。
上述三种方法兼容 IE7以上，但在IE7下不设置高度时，会产生高度错位bug。可通过设置父元素 font-size=0，再分别设置 子元素font-size解决。
方法四：利用flex布局
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Document</title> <style> *{ margin: 0; padding: 0; } .main{ display: flex; } .content{ flex:1; background-color: red; } .sitebar{ flex:0 0 200px; order:-1; background-color: green; } </style></head><body><div class="main"> <div class="content">右侧主体自适应区块</div> <div class="sitebar">左侧定宽200px区块</div></div> </body></html>-
优点：CSS3新布局方式，高大上
-
缺点：仅支持 IE11+。
三列布局：左右定款，中间自适应。
方法一：使用负外边距
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Document</title> <style> *{ margin: 0; padding: 0; } .main,.left,.right{ height: 300px; font: 20px/300px; color: #fff; text-align: center; } .main{ width: 100%; float: left; } .main .content{ margin: 0 300px 0 200px; background-color: black; } .left{ width: 200px; float: left; margin-left: -100%; background-color: red; } .right{ width: 300px; float: left; margin-left: -300px; background-color: blue; } </style></head><body> <div class="main"> <div class="content">中间主体区域宽度自适应</div> </div> <div class="left">左侧定宽200px</div> <div class="right">右侧定宽300px</div></body></html>-
优点：兼容IE7+，考虑到页面优化，中间内容区先加载
-
缺点：多一层div嵌套，不易理解
方法二：使用绝对定位
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Document</title><style>body{ margin:0px;}#left { background-color: #E8F5FE; border: 1px solid #A9C9E2; height: 400px; width: 100px; position: absolute; top: 0px; left: 0px;}#center { background-color: #F2FDDB; border: 1px solid #A5CF3D; height: 400px; margin-right: 102px; margin-left: 102px;}#right { background-color: #FFE7F4; border: 1px solid #F9B3D5; height: 400px; width: 100px; position: absolute; top: 0px; right: 0px;}</style></head><body> <div id="center">中列</div> <div id="left">左列</div> <div id="right">右列</div></body></html>-
优点：代码结构简单，考虑到了页面优化，中间内容去先加载
-
缺点：暂时没想到。。
方法三：使用flex布局
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Document</title><style>.HolyGrail-body { display: flex; flex: 1;}.HolyGrail-content { flex: 1; background-color: green;}.HolyGrail-nav, .HolyGrail-ads { /* 两个边栏的宽度设为12em */ flex: 0 0 200px; background-color: blue;}.HolyGrail-nav { /* 导航放到最左边 */ order: -1; background-color: grey;}</style></head><body> <div class="HolyGrail-body"> <main class="HolyGrail-content">...</main> <nav class="HolyGrail-nav">...</nav> <aside class="HolyGrail-ads">...</aside> </div></body></html>-
优点：高大上
-
缺点：仅支持IE11+
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
Is HTML easy to learn for beginners?
Apr 07, 2025 am 12:11 AM
HTML is suitable for beginners because it is simple and easy to learn and can quickly see results. 1) The learning curve of HTML is smooth and easy to get started. 2) Just master the basic tags to start creating web pages. 3) High flexibility and can be used in combination with CSS and JavaScript. 4) Rich learning resources and modern tools support the learning process.
The Roles of HTML, CSS, and JavaScript: Core Responsibilities
Apr 08, 2025 pm 07:05 PM
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.
Understanding HTML, CSS, and JavaScript: A Beginner's Guide
Apr 12, 2025 am 12:02 AM
WebdevelopmentreliesonHTML,CSS,andJavaScript:1)HTMLstructurescontent,2)CSSstylesit,and3)JavaScriptaddsinteractivity,formingthebasisofmodernwebexperiences.
What is an example of a starting tag in HTML?
Apr 06, 2025 am 12:04 AM
AnexampleofastartingtaginHTMLis,whichbeginsaparagraph.StartingtagsareessentialinHTMLastheyinitiateelements,definetheirtypes,andarecrucialforstructuringwebpagesandconstructingtheDOM.
Gitee Pages static website deployment failed: How to troubleshoot and resolve single file 404 errors?
Apr 04, 2025 pm 11:54 PM
GiteePages static website deployment failed: 404 error troubleshooting and resolution when using Gitee...
How to use CSS3 and JavaScript to achieve the effect of scattering and enlarging the surrounding pictures after clicking?
Apr 05, 2025 am 06:15 AM
To achieve the effect of scattering and enlarging the surrounding images after clicking on the image, many web designs need to achieve an interactive effect: click on a certain image to make the surrounding...
How to implement adaptive layout of Y-axis position in web annotation?
Apr 04, 2025 pm 11:30 PM
The Y-axis position adaptive algorithm for web annotation function This article will explore how to implement annotation functions similar to Word documents, especially how to deal with the interval between annotations...
HTML, CSS, and JavaScript: Essential Tools for Web Developers
Apr 09, 2025 am 12:12 AM
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.
