<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>清除浮动</title>
</head>
<style type="text/css">
.con,.con2{
width: 300px;
border:1px solid #000;
margin: 100px auto 0;
font-size: 0;
}
.con a{
width: 50px;
height: 50px;
display:inline-block;
background-color: gold;
font-size: 16px;
margin: 10px;
text-align: center;
line-height: 50px;
text-decoration: none;
}
/* 第一种清除浮动
.con2{
overflow: hidden;
}
*/
.con2 a{
width: 50px;
height: 50px;
background-color: gold;
font-size: 16px;
margin: 10px;
text-align: center;
line-height: 50px;
text-decoration: none;
float: left;
}
/*
.clearfix:before{
content: "";
display: table;
}
.clearfix:after{
content: "";
display: table;
clear: both;
}
*/
.clearfix:before,.clearfix:after{
content: "";
display: table;
}
.clearfix:after{
clear: both;
}
.clearfix{
zoom:1;
}
.con3{
width: 300px;
border:1px solid #000;
margin: 100px auto 0;
}
.con3 span{
background-color: gold;
float: left;
}
</style>
<body style="height: 2000px;">
<div class="con">
<a href="#">1</a>
<a href="#">2</a>
<a href="#">3</a>
<a href="#">4</a>
<a href="#">5</a>
<a href="#">6</a>
<a href="#">7</a>
<a href="#">8</a>
<a href="#">1</a>
<a href="#">2</a>
<a href="#">3</a>
<a href="#">4</a>
</div>
<div class="con2 clearfix">
<a href="#">1</a>
<a href="#">2</a>
<a href="#">3</a>
<a href="#">4</a>
<a href="#">5</a>
<a href="#">6</a>
<a href="#">7</a>
<a href="#">8</a>
<a href="#">1</a>
<a href="#">2</a>
<a href="#">3</a>
<a href="#">4</a>
<!-- <div style="clear: both"></div> 清楚浮动的第二种方法，不推荐 -->
</div>
<div class="con3 clearfix">
<span>span元素</span>
<span>span元素</span>
<span>span元素</span>
<span>span元素</span>
<span>span元素</span>
</div>
</body>
</html>
原文：https://www.cnblogs.com/lishuide/p/11985969.html