<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
<style>
ul.breadcrumb {
padding: 8px 16px;
list-style: none;
background-color: #eee;
}
ul.breadcrumb li {display: inline;}
ul.breadcrumb li+li:before {
padding: 8px;
color: black;
content: "/\00a0";
}
ul.breadcrumb li a {color: green;}
</style>
</head>
<body>
<h2>面包屑导航</h2>
<ul class="breadcrumb">
<li><a href="#">首页 </a></li>
<li><a href="#">前端 </a></li>
<li><a href="#">HTML 教程 </a></li>
<li>HTML 段落</li>
</ul>
</body>
</html>
如果把ul.breadcrumb li+li:before 改为ul.breadcrumb li+li+li:before
