flexbox常用布局上下固定，中间滚动 

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
  <style>
  	
html,body,ul{
  height:100%;
}
body{
  margin:0
}
ul{
  display:flex;
  flex-direction:column;
  padding:0;
  margin:0;
}
li{
  background:yellow;
  margin:0;
  list-style:none;
  height:20px;
}
li:first-child,
li:last-child{
  height:50px;
  background-color: green;
}
li:nth-child(2){
  flex:1;
  overflow: scroll;
}
  </style>
</head>
<body>
<ul>
  <li>1</li>
  <li>
  	<p>hello</p>
  	<p>hello</p>
  	<p>hello</p>
  	<p>hello</p>
  	<p>hello</p>
  	<p>hello</p>
  	<p>hello</p>
  	<p>hello</p>
  	<p>hello</p>
  	<p>hello</p>
  	<p>hello</p>
  	<p>hello</p>
  	<p>hello</p>
  	<p>hello</p>
  	<p>hello</p>
  	<p>hello</p>
  	<p>hello</p>
  	<p>hello</p>
  	<p>hello</p>
  </li>
  <li>3</li>

</ul>
</body>
</html>

posted @ 2017-08-03 11:09  wmui  阅读(603)  评论(0)  编辑  收藏  举报