一.代码
1.清除前
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div>
<ul>
<li></li>
<li></li>
<li></li>
</ul>
</div>
</body>
<style>
li{
width: 100px;
height: 100px;
float: left;
background: blueviolet;
border:1px solid;
margin-right: 10px;
}
ul{
list-style: none;
border: 1px solid black;
}
</style>
</html>2.清除后
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div>
<ul>
<li></li>
<li></li>
<li></li>
</ul>
</div>
</body>
<style>
li{
width: 100px;
height: 100px;
float: left;
background: blueviolet;
border:1px solid;
margin-right: 10px;
}
ul{
list-style: none;
border: 1px solid black;
}
ul::after{
content: '';
display: block;
clear: both;
}
</style>
</html>二.效果
1.清除前
2.清除后
![[计算机效率] 看图工具：Honeyview](https://img-blog.csdnimg.cn/direct/add03a8d728d43bcb1c9eb4f4884f3fd.png)
