css3的功能真是很强大，学无止境，不多说，直接上代码
css部分：
1 <style>
2 *{margin: 0; padding: 0;}
3 .text-center{text-align:center}
4 .col_cont{width:300px;height:300px;margin:auto}
5 .thumbnail{cursor:pointer;text-decoration:none;display:block;padding:4px;height:200px;font-weight:bold;">#fff;border:1px solid #ddd; }
6 .thumbnail img, .thumbnail h3{transition:all .5s;-webkit-transition:all .5s;-ms-transition:all .5s;}
7 .thumbnail img{width:35%;margin-top:30px}
8 .thumbnail h3{color:silver}
9 .thumbnail:hover img{-webkit-transform:translateY(-20px);-moz-transform:translateY(-20px);-ms-transform:translateY(-20px);
10 -o-transform:translateY(-20px);transform:translateY(-20px)}
11 .thumbnail:hover h3{color:#2c3e50}
12 </style>
html部分：
<div class="col_cont">
<a class="thumbnail text-center">
<img src="images/service-1.png" alt="...">
<div class="caption">
<h3>产品介绍产品介绍</h3>
</div>
</a>
</div>
