.shanghaiduiwai_1{width:200px height:150px; float:left; margin:auto 10px auto 30px;}
.shanghaiduiwai_2{width:200px height:150px; float:right; margin:auto 30px auto 10px;}
.shanghaiduiwai_3{width:200px height:150px; float:right; margin:auto auto 10px 10px; text-align:center;}
.blue{color:#0033CC;}