body {min-width: 1000px; margin: 0; padding: 0;background:#fff;}
.head{width: 100%; margin: 0; padding: 0;}
.head .top_1{background: url(webresourcecms201705img_pc_sitetoubu.png) no-repeat center; height: 698px;width: 100%;margin: 0 auto;}
.head .top_2{background: url(webresourcecms201705img_pc_sitedaohang.png) no-repeat center;height: 49px;width: 100%;margin: 0 auto;}