#a1565{width:180px;}
#a1566{width:180px;}
.nav .serach .serachBox input.btb{float: right; width: 40px; height: 30px; display: block; border: none; outline: none; cursor: pointer; background: url(https://aais.njau.edu.cn/skin/images/btn_03.png) center center no-repeat;}
.mainContent{min-height:608px;
    width: 1200px;
    margin: 0 auto;}
    
    table{margin: 0 auto;}
.vsbcontent_img{text-align: center;}
p{ line-height: 35px;  font-size: 16px;}
.clear{clear: both;}
#vsb_content img{margin:0 auto;}