<!DOCTYPE html>
<html lang="en">
<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>下拉菜单</title>
<style>
a {
color: #FFFF99;
text-decoration: none;
}
a:hover {
color: #FFFFFF;
text-decoration: underline;
}
.top-nav {
font-size: 16px;
font-weight: bold;
list-style: none;
border-bottom: 8px solid #DC4E1B;
overflow: auto;
}
.top-nav li {
float: left;
}
.top-nav li a span {
display: none;
}
.top-nav li a:hover span {
display: block;
}
.top-nav li a:hover {
/* 上移 */
margin-top: -20px;
}
.top-nav li a {
line-height: 20px;
text-decoration: none;
background: #DDDDDD;
color: #666666;
display: block;
width: 80px;
text-align: center;
}
</style>
</head>
<body>
<div id="top">
<ul class="top-nav">
<li><a href="#">首页<span>Home</span></a></li>
<li><a href="#">课程大厅<span>Course</span></a></li>
<li><a href="#">学习中心<span>Learn</span></a></li>
<li><a href="#">经典案例<span>Case</span></a></li>
<li><a href="#">关于我们<span>About</span></a></li>
</ul>
</div>
</body>
</html>
