标签：css
<html>
<head>
<style>
a {
position: relative;
display: inline-block;
outline: none;
text-decoration: none;
color: #000;
font-size: 32px;
padding: 5px 10px;
cursor:hand;
}
a:hover::before, a:hover::after { position: absolute; }
a:hover::before { content: "\5B"; left: -20px; }
a:hover::after { content: "\5D"; right: -20px; }
</style>
</head>
<body>
<h3>悬浮出现双括号演示</h3>
<a>点我</a>
</body>
</html>
标签：css
原文地址：http://blog.csdn.net/zhenzhenzhao12/article/details/44893061
