@media (max-width: 790px) and (min-width: 770px){
  .xg_banner .xg_abanner{width: 100%!important;height: 100%!important;}
  .xg_banner .xg_abanner .xg_banner_item{width: 1878px!important;height: initial!important;max-width: initial!important;max-height: initial!important;min-width: initial!important;min-height: initial!important;}
  .xg_banner .xg_abanner .xg_banner_item img{max-width: initial!important;}
}