<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<title>无标题文档</title>
<link rel="shortcut icon" href="img/icoTest.ico">
</head>
<style type="text/css">
/*公共样式*/
ul,li,div{
margin: 0;
padding: 0;
}
li{
list-style: none;
}
.floatLeft{
float: left;
}
.floatRight{
float: right;
}
/*方法一：设置overflow清除浮动（同理可设置父级元素高度）*/
/*
.overFlow{
overflow: auto;
zoom:1;//处理兼容性
}
*/
/*方法二：添加元素清除浮动*/
/*
.floatClear{
clear: both;
}
*/
/*方法三：通过伪类*/
.container{zoom: 1;}/*处理兼容性问题*/
.container :after{
display: block;
clear: both;
width: 0;
height: 0;
content: "";
visibility: hidden;
}
/*样式*/
.container{
position: relative;
width: 302px;
height: 500px;
margin: auto;
}
.container .nav{
width:212px;
}
.container .nav li{
width: 90px;
height: 30px;
border: 1px solid #ccc;
}
.content{
z-index: 1;
width: 210px;
height: 300px;
border: 1px solid #ccc;
}
</style>
<body>
<div class="container">
<ul class="nav overFlow">
<li class="floatLeft"></li>
<li class="floatRight"></li>
</ul>
<!--方法二：清除浮动-->
<!--
<div class="floatClear"></div>
-->
<div class="content"></div>
</div>
</body>
<html>
