.ps_preloader{position:fixed;top:0;left:0;width:100%;height:100%;z-index:9999;display:none}
.ps_preloader .preloader_back{position:absolute;top:0;left:0;width:100%;height:100%;background-color:#ccc;opacity:.3}
.ps_preloader .preload_image{position:absolute;top:0;left:0;width:100%;height:100%;background:url('commons/img/preloader.gif') no-repeat center center;background-size:64px 64px}