trycss_sel_after 在线代码实例

实例代码( Tip: 登录后体验更佳 )
运行代码

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>W3Cschool教程(w3cschool.cn)</title> 
<style>
p:after
{ 
content:"- 注意我";
}
</style>
</head>
<body>
<p>我的名字是 Donald</p>
<p>我住在 Ducksburg</p>
<p><b>注意：</b> :after在IE8中运行，必须声明!DOCTYPE </p>
</body>
</html>
 
 
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运行结果
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