<!DOCTYPE html>
<html>
<head>
<title>Accordion</title>
<meta charset="utf-8">
<script type="text/javascript" src="../js/jquery.js"></script>
<style type="text/css">
.accordionMenu{
background: #fff;
color:#424242;
font:12px Arial,Verdana,sans-serif;
margin : 0 auto;
padding: 10px;
width: 500px;
}
.accordionMenu h2{
margin:5px 0;
padding :0;
position: relative;
}
.accordionMenu h2:before{
border:5px solid #fff;
content: "";
border-color:#fff transparent transparent;
height: 0;
position: absolute;
right: 10px;
top:15px;
width: 0px;
}
.accordionMenu h2 a{
background: #8f8f8f;
border-radius: 5px;
display: block;
color:#424242;
font: 13px normal;
margin: 0px;
padding: 10px 10px;
text-decoration: none;
}
.accordionMenu p{
margin:0;
height: 0px;
overflow: hidden;
padding: 0px 10px;
transition:height 0.5s ease-in;
}
.accordionMenu :target p{
height: 100px;
overflow: auto;
}
.accordionMenu :target h2:before{
border-color: transparent transparent
transparent #fff ;
}
</style>
</head>
<body>
<div class="accordionMenu">
<div class="menuSection" id="brand">
<h2><a href="#brand">Brand</a></h2>
<p>Lorem isfaf </p>
</div>
<div class="menuSection" id="promotion">
<h2><a href="#promotion">Promotion</a></h2>
<p>Lornasdfa sdfasdfa</p>
</div>
<div class="menuSection" id="event">
<h2><a href="#event">Event</a></h2>
<p>Loarfeafsadf </p>
</div>
</div>
<script type="text/javascript">
</script>
</body>
</html>
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css3 target 标签 -- 手风琴
原文地址：http://www.cnblogs.com/luludehuhuan/p/7856747.html