<!DOCTYPE HTML>
<html lang="zh-cn">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie-edge">
<title>布局练习</title>
<style>
.csl1{
float: left;
background-color: #111;
width: 100px;
height: 100px;
}
.csl2{
float: left;
background-color: #ccc;
width: 100px;
height: 100px;
}
.content:after{
/*zoom:1*/
content:"";
display:block;
clear:both;
/*
height:0;
visibility:hidden;*/
/*overflow:hidden*/
}
.clear{
/*clear: both;*/
}
</style>
</head>
<body>
<div class="content">
<div class="csl1"></div>
<div class="csl2"></div>
</div>
<div class="clear"></div>
<div class="csl1"></div>
</body>
</html>