<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>元素盒子垂直居中的实现方法</title>
<style type="text/css">
#parent {
width:500px;
height:500px;
background-color:#188eee;
display: table;}
#child {
width:100px;
height:auto;
max-height:200px;
overflow-y:scroll;
display: table-cell;
vertical-align: middle;
}
#child text{
display:block;
width:80%;
margin-left:10%;
height:40px;
line-height:40px;
background-color:#fff;
text-align:center;
border-bottom:1px #f1f1f1 solid;
}
#child text:last-child{
border-bottom:0px;
}
</style>
</head>
<body>
<div >
<div >
<text>111</text>
<text>222</text>
<text>333</text>
<text>444</text>
<text>555</text>
</div>
</div>
</body>
</html>