CSS 关元素居中的方法汇总

Line-Height Method

效果：

代码：

html

<div id="parent">
<div id="child">Text here</div>
</div>
css

#child {
line-height: 200px;
}


垂直居中一张图片，代码如下

html

<div id="parent">
<img src="image.png" alt="" />
</div>
css

#parent {
line-height: 200px;
}
#parent img {
vertical-align: middle;
}

CSS Table Method

代码：

html

<div id="parent">
<div id="child">Content here</div>
</div>

css

#parent {display: table;}
#child {
display: table-cell;
vertical-align: middle;
}


低版本 IE fix bug：

#child {
display: inline-block;
}

Absolute Positioning and Negative Margin

代码：

html

<div id="parent">
<div id="child">Content here</div>
</div>

css

#parent {position: relative;}
#child {
position: absolute;
top: 50%;
left: 50%;
height: 30%;
width: 50%;
margin: -15% 0 0 -25%;
}

Absolute Positioning and Stretching

 

代码：

html

<div id="parent">
<div id="child">Content here</div>
</div>

css

#parent {position: relative;}
#child {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
width: 50%;
height: 30%;
margin: auto;
}

Equal Top and Bottom Padding

 

 

代码：

html

<div id="parent">
<div id="child">Content here</div>
</div>

css

#parent {
padding: 5% 0;
}
#child {
padding: 10% 0;
}

Floater Div

代码：

html

<div id="parent">
<div id="floater"></div>
<div id="child">Content here</div>
</div>

css

#parent {height: 250px;}
#floater {
float: left;
height: 50%;
width: 100%;
margin-bottom: -50px;
}
#child {
clear: both;
height: 100px;
}

转自：http://blog.csdn.net/wolinxuebin/article/details/7615098