css定得select

<style>
.sel { font-size: 12px; width: 100px; position: relative; left: -2px; top: -2px;}
.box { border:1 solid #BBBBBB; height: 19px; width: 99px; }
.box2 { border:1 solid #FFFFFF; overflow: hidden; width: 97px; height: 17px; }
</style>
<span class=box>
<div class=box2>
<select class=sel>
<option>网络精英</option>
<option>网络精英</option>
</select>
</div>
</span>