CSS3边框阴影实例:
 
<!DOCTYPE >
<html>
<head>
<meta charset="utf-8">
<title>3边框阴影</title>
<style> 
div
{
width:300px;
height:100px;
background-color:#ff9900;
-moz-box-shadow: 5px 5px 5px #888888; /* 老的 Firefox */
box-shadow: 5px 5px 5px #888888;
}
</style>
</head>
<body>
<div></div>
</body>
</html>