摘要：<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>float</title&g
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>float</title>
<style>
ul li{
list-style:none;width:150px;height:60px;line-heignh:60px;
text-align:center;background:#ccc;border:1px solid #666;
margin:5px 10px;float:left;}
.clear{
clear:both;}
ul li div{
width:150px;height:150px;line-height:150px;text-align:center;
background:yellow;display:none;}
ul li:hover div{
display:block;}
</style>
</head>
<body>
<ul>
<li>html
<div>目录</div>
</li>
<li>css
<div>目录</div>
</li>
<li>javascript
<div>目录</div>
</li>
<li>js
<div>目录</div>
</li>
<li>php
<div>目录</div>
<li>
</ul>
<div class="clear"></div>
</body>
</html>
批改老师：灭绝师太批改时间：2018-11-20 10:23:16
老师总结：这个作业重新提交，问题你反馈到工单，我已经回复了，你还犯这个错误，这种嵌套是什么鬼
