<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>练习</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<div id="nav">
<ul>
<li>首页</li>
<li>歌曲</li>
<li>视频</li>
<li>电影</li>
<li>关于我们</li>
</ul>
</div>
<div id="left">
<span>×</span>
</div>
<div id="right">
<span>×</span>
</div>
</body>
</html>
/*复位*/
*{
margin:0;
padding:0;
}
#nav ul{
list-style:none;
background-color:#000;
color:#fff;
padding-left:100px;
}
#nav ul li{
display:inline-block;
cursor:pointer;
padding:20px 0px;
color:inherit;
margin:0px 15px;
}
/*鼠标滑过字体抖动*/
#nav ul li:hover{
position:relative;
top:3px;
color:#74b0e2;
}
#left,#right{
border:1px solid gray;
width:120px;
height:200px;
position:fixed;
top:300px;
box-shadow:0px 0px 8px 3px gray;
}
#left{
left:10px;
}
#right{
right:10px;
}
#left span,#right span{
float:right;
cursor:pointer;
}
效果如下
![](https://images2015.cnblogs.com/blog/928390/201611/928390-20161117130200107-1643692975.png)