.banner-top{height: 200px;}
.banner-top img{width: 100%; height: 200px;}
.ad_banner_3{height: 200px; margin-bottom: 20px;}
.ad_banner_3 img{width: 100%; height: 200px;}
.ad_banner_4{height: 228px; padding: 0 14px;}
.ad_banner_4 img{width: 100%;height: 228px;}
.main .boxcenter{position: relative; overflow: visible;}
.ad_banner_5{position: absolute; width: 142px; height: 285px; top:0; }
.ad_banner_5 img{width: 100%; height: 285px;}
.ad_banner_5_l{left: -150px;}
.ad_banner_5_r{right: -150px;}
.contentBor .ad_banner_3{height: 180px; margin: 20px 20px 20px 50px;}
.contentBor .ad_banner_3 img{height: 180px;}
.banner-bg{width: 1200px; margin: 0 auto; background: #ccc;}