clear{clear:both;}


@media screen and (max-width: 1023px){
.daohang-box{
width:100%!important;
}
.daohang{padding:0 20px;}
.class_A-box{width:100px!important;height:40px!important;line-height:40px!important;}
.class_B-box{width:100%!important;}


}