日期:2014-05-17  浏览次数:20716 次

CSS3的before, after和label的for用法
使用before和after可以用content, 结合before, after可做写入内容和样式

看例子:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<style type="text/css">
	.before{
		width: 100px;
		height:100px;
		border: 1px solid blue;
	}
	.before::before{
		content:'bef';
		width: 20px;
		height: 20px;
		background-color:red;
	}
	.before::after{
		content:'aft';
		width: 20px;
		height: 20px;
		background-color:blue;
	}
</style>
</head>
<body>
	<input id='input1' type='radio'/>
	<div class="before"></div>
	<label for='input1'>点击我</label>
	
</body>
</html>