.bx-core-waitwindow{background-image:url(/upload/loading.gif)!important;font-size:0px!important;background-position:50% 50%!important;padding:0px!important;background-color:#FFFFFF!important;border-color:#CCCCCC!important;width:550px!important;height:400px!important;position:fixed!important;left:50%!important;top:50%!important;margin-left:-275px!important;margin-top:-200px!important;}