css :active选择器在线运行效果展示

编辑代码

<!DOCTYPE HTML> 
<html> 
    <head> 
        <title>css :active选择器设置被激活链接的样式</title> 
        <style type="text/css"> 
        :active {
            border: thin black solid; 
            padding: 4px; 
        } 
        </style> 
    </head> 
    <body> 
        <a href="http://www.manongjc.com">码农教程</a> 
        <p>I like <span>HTML</span> and CSS.</p> 
        <button>Hello</button> 
    </body> 
</html>