Six ways to achieve vertical and horizontal centering in CSS_html/css_WEB-ITnose

is often used in projects. Today I summarized it:

Demo address: http://codepen .io/anon/pen/xGdpOa

The following two classes are public classes for better display, non-core code

	.common{		width: 600px;height: 180px;		background-color:#56abe4;		color: #fff;		margin: 15px auto; 		border-radius: 3px;	   }	.con{		display: inline-block;		padding: 15px;		width: 160px;		height: 80px;		background-color: orange;	}

　

Text part:

First Method:

/*position: absolute;top:0;right: 0;bottom: 0;left: 0;margin: auto;*/

HTML structure:

<div class="common block1">	<div class="inner1 con">		position: absolute;		top:0;right: 0;bottom: 0;left: 0;		margin: auto;	</div></div>

CSS part:

		.block1{		position: relative;	}	.inner1{		position: absolute;		top:0;right: 0;bottom: 0;left: 0;		margin: auto;	}

　

Second method:

/*display : table-cell*/

HTML structure:

<div class="common block2">   	<div class="con">		display: table-cell;		text-align: center;		vertical-align: middle;	</div></div>

CSS part:

.block2{		display: table-cell;		text-align: center;		vertical-align: middle;	}

>

/*display: flex;*/

HTML structure:

<div class="common block3">	<div class="con">  display: flex;  align-items: center;  justify-content: center;	</div></div>

CSS part:

　

　

The fourth method:

	.block3{		display: flex;		align-items: center;		justify-content: center;	}

/*Negative positioning*/

HTML structure:

CSS part:

<div class="common block4">	<div class="inner4 con">	   position: absolute;		top: 50%;		left: 50%;        并利用负定位消除元素的上下，左右偏移	</div></div>

　

Fifth method:

	.block4{               position: relative;	}	.inner4{		position: absolute;		top: 50%;		left: 50%;		margin-top: -55px;/*80/2+15=55*/                margin-left: -95px;/*160/2+15=95*/	}

/*transform*/

HTML structure:

CSS part:

<div class="common block5">	<div class="inner5 con">		position: absolute;		top: 50%;		left: 50%;        transform:translate(-50%,-50%);	</div></div>

　

	.block5{                position: relative;	}	.inner5{		position: absolute;		top: 50%;		left: 50%;                transform:translate(-50%,-50%);                word-wrap: break-word;	}

The sixth method: (better compatibility)

/ *Inline block*/ HTML structure:

CSS part:

<div class="common block6">	<div class="inner6 con">行内块:<br/>谨记span标签与该div之间是没有空白的，否则会产生误差</div><span></span></div>

There are compatibility issues with the above solutions. Please check the browser compatibility of core css before using it. The query address is: http://caniuse.com/

	.block6{ text-align:center;}	.inner6,.block6 span{	 display:inline-block;	 *display:inline;	 zoom:1;    	 vertical-align:middle;		}	.inner6{max-width:100%;max-height:100%;}	.block6 span{width:0;height:100%;}

and above.

Additions are welcome~