.static_banner{}
 .bg_class{height:460px;background-image:url(/App_Sucai/beijingthemes/images/banner.jpg);background-size:1920px 460px;background-position:center center;background-repeat:no-repeat}
 .bg_class1{height:140px;background-image:url(/App_Sucai/beijingthemes/images/bg-3.jpg);background-size:1920px 150px;background-position:center center;background-repeat:no-repeat}
 .bg_class2{height:135px;background-image:url(/App_Sucai/beijingthemes/images/bg-2.jpg);background-size:999px 135px;background-position:center center;background-repeat:no-repeat;background-color:#bd402a}
  @media screen and (max-width:768px) {
 .bg_class{width:100%!important;height:0;padding-bottom:23.4%;background-image:url(/App_Sucai/beijingthemes/images/banner.jpg);background-size:100%;}
 .bg_class1{width:100%;height:0;padding-bottom:7.2%;background-image:url(/App_Sucai/beijingthemes/images/bg-3.jpg);background-size:100%;background-position:center center;background-repeat:no-repeat}
 .bg_class2{width:100%;height:0;padding-bottom:15.3%;background-image:url(/App_Sucai/beijingthemes/images/bg-2.jpg);background-size:100%}

   }