#popup_this{left:50%!important;margin-left:-308px;top:200px!important;}
.b-close{position:absolute;right:0;top:0;cursor:pointer;color:#fff;background:#03a87c;padding:5px 10px;}
@media (max-width:480px){
  #popup_this{margin-left:-150px;max-width:300px;}
}