css如何清除浮动

css中可以用 clearfix清除浮动

实例:

<html > 
<head> 
<title> css用clearfix清除浮动实例</title> 
<meta name="generator" content="editplus" /> 
<meta name="author" content="" /> 
<meta name="keywords" content="" /> 
<meta name="description" content="" /> 
</head> 
<body> 
<style type="text/css"> 
/**//*所有主流浏览器都支持 :after 伪元素。*/ 
.clearfix:after{}{content:".";display:block;height:0;clear:both;visibility:hidden} 
.clearfix{}{*+height:1%;}/**//*不知道有什么用处,不加ie7也没有问题*/ 
.box{}{ background:#111;width:500px; position:relative;} 
.l{}{float:left; background:#333;width:200px; height:100px;} 
.r{}{float:right;background:#666;width:200px; height:200px;} 
.s{}{width:100px; height:100px;background:#999;position:absolute;right:-50px;;} 
</style> 
<div class="box clearfix"> 
<div class="l">left</div> 
<div class="r">right</div> 
<div class="s">absolute</div> 
</div> 
</body> 
</html>

参考资料:     css用clearfix清除浮动     http://www.studyofnet.com/news/196.html

css

相关推荐