Table of Contents
还记得我们折腾过的居中么？ - jerrylsxu
虽然div中内容上下居中的问题已经是一个比较古老的话题，但是最近发现还是有很多前端开发者在询问如何实现。其实网络上已经有很多资料和案例了，我这里再总结一下几个比较常见的处理方式。
情形一：div限高，内容长度限一行
<span style="color: #008080;">1</span> <span style="color: #800000;">.v-align </span>{
<span style="color: #008080;">2</span> <span style="color: #ff0000;"> margin</span>:<span style="color: #0000ff;"> 0 auto</span>;
<span style="color: #008080;">3</span> <span style="color: #ff0000;"> width</span>:<span style="color: #0000ff;"> 200px</span>;
<span style="color: #008080;">4</span> <span style="color: #ff0000;"> height</span>:<span style="color: #0000ff;"> 80px</span>;
<span style="color: #008080;">5</span> <span style="color: #ff0000;"> text-align</span>:<span style="color: #0000ff;"> center</span>;
<span style="color: #008080;">6</span> <span style="color: #ff0000;"> line-height</span>:<span style="color: #0000ff;"> 80px</span>;
<span style="color: #008080;">7</span> <span style="color: #ff0000;"> border</span>:<span style="color: #0000ff;"> 1px solid #ddd</span>;
<span style="color: #008080;">8</span> }Copy after login
<span style="color: #008080;">1</span> <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="v-align"</span><span style="color: #0000ff;">></span>我的内容只能有一行。<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span></span>
Copy after login
情形二：div限高，内容不限
<span style="color: #008080;"> 1</span> <span style="color: #800000;">.v-mult </span>{
<span style="color: #008080;"> 2</span> <span style="color: #ff0000;"> margin</span>:<span style="color: #0000ff;"> 0 auto</span>;
<span style="color: #008080;"> 3</span> <span style="color: #ff0000;"> width</span>:<span style="color: #0000ff;"> 200px</span>;
<span style="color: #008080;"> 4</span> <span style="color: #ff0000;"> height</span>:<span style="color: #0000ff;"> 100px</span>;
<span style="color: #008080;"> 5</span> <span style="color: #ff0000;"> border</span>:<span style="color: #0000ff;"> 1px solid #ddd</span>;
<span style="color: #008080;"> 6</span> <span style="color: #ff0000;"> overflow</span>:<span style="color: #0000ff;"> hidden</span>;
<span style="color: #008080;"> 7</span> }
<span style="color: #008080;"> 8</span> <span style="color: #800000;">.v-mult .empty,
</span><span style="color: #008080;"> 9</span> <span style="color: #800000;">.v-mult .text </span>{
<span style="color: #008080;">10</span> <span style="color: #ff0000;"> display</span>:<span style="color: #0000ff;"> inline-block</span>;
<span style="color: #008080;">11</span> <span style="color: #ff0000;"> *display</span>:<span style="color: #0000ff;"> inline</span>;
<span style="color: #008080;">12</span> <span style="color: #ff0000;"> *zoom</span>:<span style="color: #0000ff;"> 1</span>;
<span style="color: #008080;">13</span> <span style="color: #ff0000;"> vertical-align</span>:<span style="color: #0000ff;"> middle</span>;
<span style="color: #008080;">14</span> }
<span style="color: #008080;">15</span> <span style="color: #800000;">.v-mult .empty </span>{
<span style="color: #008080;">16</span> <span style="color: #ff0000;"> height</span>:<span style="color: #0000ff;"> 100%</span>;
<span style="color: #008080;">17</span> }Copy after login
<span style="color: #008080;">1</span> <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="v-mult"</span><span style="color: #0000ff;">></span> <span style="color: #008080;">2</span> <span style="color: #0000ff;"><span style="color: #800000;">span </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="empty"</span><span style="color: #0000ff;">></span><span style="color: #800000;">span</span><span style="color: #0000ff;">></span> <span style="color: #008080;">3</span> <span style="color: #0000ff;"><span style="color: #800000;">span </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="text"</span><span style="color: #0000ff;">></span>我的内容不限，多高都行<span style="color: #0000ff;"><span style="color: #800000;">br</span><span style="color: #0000ff;">></span>换行照常<span style="color: #0000ff;"></span><span style="color: #800000;">span</span><span style="color: #0000ff;">></span> <span style="color: #008080;">4</span> <span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span></span></span></span></span>
Copy after login
情形三：div高度不定，内容高度一定
<span style="color: #008080;"> 1</span> <span style="color: #800000;">.v-auto </span>{
<span style="color: #008080;"> 2</span> <span style="color: #ff0000;"> position</span>:<span style="color: #0000ff;"> relative</span>;
<span style="color: #008080;"> 3</span> <span style="color: #ff0000;"> margin</span>:<span style="color: #0000ff;"> 0 auto</span>;
<span style="color: #008080;"> 4</span> <span style="color: #ff0000;"> width</span>:<span style="color: #0000ff;"> 200px</span>;
<span style="color: #008080;"> 5</span> <span style="color: #ff0000;"> border</span>:<span style="color: #0000ff;"> 1px solid #ddd</span>;
<span style="color: #008080;"> 6</span> }
<span style="color: #008080;"> 7</span> <span style="color: #800000;">.v-auto .text </span>{
<span style="color: #008080;"> 8</span> <span style="color: #ff0000;"> position</span>:<span style="color: #0000ff;"> absolute</span>;
<span style="color: #008080;"> 9</span> <span style="color: #ff0000;"> top</span>:<span style="color: #0000ff;"> 50%</span>;
<span style="color: #008080;">10</span> <span style="color: #ff0000;"> margin-top</span>:<span style="color: #0000ff;"> -50px</span>;
<span style="color: #008080;">11</span> <span style="color: #ff0000;"> height</span>:<span style="color: #0000ff;"> 100px</span>;
<span style="color: #008080;">12</span> <span style="color: #ff0000;"> border</span>:<span style="color: #0000ff;"> 1px dashed #ddd</span>;
<span style="color: #008080;">13</span> }Copy after login
<span style="color: #008080;">1</span> <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="v-auto"</span><span style="color: #0000ff;">></span> <span style="color: #008080;">2</span> <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="text"</span><span style="color: #0000ff;">></span> <span style="color: #008080;">3</span> <span style="color: #000000;"> 我的高度是固定的，只有100px高，但是我的父及高度不定，我怎么垂直居中呢？ </span><span style="color: #008080;">4</span> <span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span> <span style="color: #008080;">5</span> <span style="color: #0000ff;"><span style="color: #800000;">br</span><span style="color: #0000ff;">><span style="color: #800000;">br</span><span style="color: #0000ff;">><span style="color: #800000;">br</span><span style="color: #0000ff;">><span style="color: #800000;">br</span><span style="color: #0000ff;">><span style="color: #800000;">br</span><span style="color: #0000ff;">><span style="color: #800000;">br</span><span style="color: #0000ff;">><span style="color: #800000;">br</span><span style="color: #0000ff;">><span style="color: #800000;">br</span><span style="color: #0000ff;">></span> <span style="color: #008080;">6</span> <span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span></span></span></span></span></span></span></span></span></span></span>
Copy after login
情形四：div高度不定，内容高度不定
<span style="color: #008080;"> 1</span> <span style="color: #800000;">.v-auto-out </span>{
<span style="color: #008080;"> 2</span> <span style="color: #ff0000;"> position</span>:<span style="color: #0000ff;"> relative</span>;
<span style="color: #008080;"> 3</span> <span style="color: #ff0000;"> margin</span>:<span style="color: #0000ff;"> 0 auto</span>;
<span style="color: #008080;"> 4</span> <span style="color: #ff0000;"> width</span>:<span style="color: #0000ff;"> 200px</span>;
<span style="color: #008080;"> 5</span> <span style="color: #ff0000;"> border</span>:<span style="color: #0000ff;"> 1px solid #ddd</span>;
<span style="color: #008080;"> 6</span> }
<span style="color: #008080;"> 7</span> <span style="color: #800000;">.v-auto-out .auto-in </span>{
<span style="color: #008080;"> 8</span> <span style="color: #ff0000;"> position</span>:<span style="color: #0000ff;"> absolute</span>;
<span style="color: #008080;"> 9</span> <span style="color: #ff0000;"> top</span>:<span style="color: #0000ff;"> 50%</span>;
<span style="color: #008080;">10</span> <span style="color: #ff0000;"> border</span>:<span style="color: #0000ff;"> 1px dashed #ddd</span>;
<span style="color: #008080;">11</span> <span style="color: #008000;">/*</span><span style="color: #008000;"> 这里有兼容性问题 </span><span style="color: #008000;">*/</span>
<span style="color: #008080;">12</span> <span style="color: #ff0000;"> -webkit-transform</span>:<span style="color: #0000ff;"> translateY(-50%)</span>;
<span style="color: #008080;">13</span> <span style="color: #ff0000;"> -ms-transform</span>:<span style="color: #0000ff;"> translateY(-50%)</span>;
<span style="color: #008080;">14</span> <span style="color: #ff0000;"> -o-transform</span>:<span style="color: #0000ff;"> translateY(-50%)</span>;
<span style="color: #008080;">15</span> <span style="color: #ff0000;"> transform</span>:<span style="color: #0000ff;"> translateY(-50%)</span>;
<span style="color: #008080;">16</span> }Copy after login
<span style="color: #008080;">1</span> <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="v-auto-out"</span><span style="color: #0000ff;">></span> <span style="color: #008080;">2</span> <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="auto-in"</span><span style="color: #0000ff;">></span>我的高度不定，我的父及高度也不定，这下要上下居中，该如何是好？我们一起来瞧瞧吧。<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span> <span style="color: #008080;">3</span> <span style="color: #0000ff;"><span style="color: #800000;">br</span><span style="color: #0000ff;">><span style="color: #800000;">br</span><span style="color: #0000ff;">><span style="color: #800000;">br</span><span style="color: #0000ff;">><span style="color: #800000;">br</span><span style="color: #0000ff;">><span style="color: #800000;">br</span><span style="color: #0000ff;">><span style="color: #800000;">br</span><span style="color: #0000ff;">><span style="color: #800000;">br</span><span style="color: #0000ff;">><span style="color: #800000;">br</span><span style="color: #0000ff;">><span style="color: #800000;">br</span><span style="color: #0000ff;">></span> <span style="color: #008080;">4</span> <span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span></span></span></span></span></span></span></span></span></span></span></span>
Copy after login
好了，知道这四种方式，我相信足以应对日常工作中的各种垂直居中问题。代码很简单，不再做多余阐述。总之一句话，CSS的各个属性样式，就好像人肢体的各个器官，了解了各个器官的功能，才能相互配合完成各种任务。相反，个体的能力是有限的。
作者博客：http://www.seejs.com
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
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
Assassin's Creed Shadows: Seashell Riddle Solution
4 weeks ago
By DDD
What's New in Windows 11 KB5054979 & How to Fix Update Issues
3 weeks ago
By DDD
Where to find the Crane Control Keycard in Atomfall
4 weeks ago
By DDD
Roblox: Dead Rails - How To Complete Every Challenge
1 months ago
By DDD
How to fix KB5055523 fails to install in Windows 11?
2 weeks ago
By DDD
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 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.
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...
