body{margin:0;overflow:hidden;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background-color:#000;color:#fff;-webkit-user-select:none;user-select:none}canvas{display:block;position:absolute;top:0;left:0;z-index:0}#ui-layer{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:10}