#customAlertOverlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,0.5);z-index:4}#customAlertBox{z-index:16;position:fixed;top:30%;left:50%;background:#fff;border:1px solid #000;border-radius:10px;width:400px;height:120px;margin-left:-200px;line-height:30px;padding:15px;text-align:center}