<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<meta name="Author" content="胡超">
<title>super胡</title>
<style>
#a1{
display:table-cell;
text-align:center;
vertical-align:middle;
}
#a2{
display:table;
300px;
height:300px;
border:1px solid red;
}
</style>
</head>
<body>
<div id="a2">
<div id="a1">
<img src="7v/u=2787330296,1499357788&fm=21&gp=0.jpg"/>
</div>
</div>
</body>
</html>
//<img>的容器设置如下
2 {
3 display:table-cell;
4 text-align:center;
5 vertical-align:middle;
6 }