1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
2 "http://www.w3.org/TR/html4/loose.dtd">
3 <html>
4 <head>
5 <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
6 <script type="text/javascript" src="js/prefixfree.min.js"></script>
7 <title>用css3实现鼠标移进去当前亮其他变灰</title>
8 </head>
9 <style type="text/css">
10 *{margin: 0;padding: 0;font-size:12px;}
11 .wrapper{border: 1px #708090 solid;width: 900px;margin: 100px auto;height: 300px;padding: 20px;border-radius: 8px;box-shadow: 2px 2px 6px #666,-2px -2px 6px #666;}
12 li{list-style: none;}
13 .box:hover li{opacity:0.2; }
14 .box li{float: left;width:48px; height:48px;position:relative; margin-right:10px;
15 -webkit-transition: opacity 1s ease-in-out;
16 -moz-transition: opacity 1s ease-in-out;
17 -ms-transition: opacity 1s ease-in-out;
18 -o-transition: opacity 1s ease-in-out;
19 transition: opacity 1s ease-in-out;
20 }
21 .box li:hover{opacity:1; }
22 .box li a{position:absolute;left:-10px;width:80px;height:30px;top:-30px;color: #fff;font-weight:bold;background:#000;border-radius:8px;box-shadow:1px 0 2px #fff inset;text-align:center;opacity:0;
23 -webkit-transition: opacity 1s ease-in-out;
24 -moz-transition: opacity 1s ease-in-out;
25 -ms-transition: opacity 1s ease-in-out;
26 -o-transition: opacity 1s ease-in-out;
27 transition: opacity 1s ease-in-out;
28 }
29 .box li:hover a{opacity:1; top:-30px;}
30 .delicious { background-image:url("http://images.cnblogs.com/cnblogs_com/hxh-hua/478335/o_delicious.png"); }
31 .digg { background-image:url("http://images.cnblogs.com/cnblogs_com/hxh-hua/478335/o_digg.png"); }
32 .facebook { background-image:url("http://images.cnblogs.com/cnblogs_com/hxh-hua/478335/o_facebook.png"); }
33 .flickr { background-image:url("http://images.cnblogs.com/cnblogs_com/hxh-hua/478335/o_digg.png"); }
34 .linkedin { background-image:url("http://images.cnblogs.com/cnblogs_com/hxh-hua/478335/o_flickr.png"); }
35 .box a{display: block;}
36 </style>
37 <body>
38 <div class="wrapper">
39 <ul class="box">
40 <li class="delicious"><a href="#" >Delicious</a></li>
41 <li class="digg"><a href="#" >Digg</a></li>
42 <li class="facebook"><a href="#" >Facebook</a></li>
43 <li class="flickr"><a href="#">Flickr</a></li>
44 <li class="linkedin"><a href="#">LinkedIn</a></li>
45 </ul>
46 </div>
47 </body>
48 </html>
demo:http://jsfiddle.net/9SuUy/