html,body{margin:0;padding:0;font-family:Arial;font-size:12px;color:white;background:black;-webkit-text-size-adjust:none;-webkit-tap-highlight-color:transparent;}#game_canvas{z-index:1;overflow:hidden;image-rendering:optimizeSpeed;-webkit-tap-highlight-color:transparent;-moz-tap-highlight-color:transparent;-webkit-user-select:none;-webkit-transform:translateZ(0);-ms-touch-action:none;}canvas{z-index:1;overflow:hidden;image-rendering:optimizeSpeed;-webkit-tap-highlight-color:transparent;-moz-tap-highlight-color:transparent;-webkit-user-select:none;-webkit-transform:translateZ(0);}#wrong_orientation{background:black;position:absolute;top:0px;left:0px;z-index:2;width:100%;height:100%;display:none;}#wrong_orientation img{display:block;margin:0 auto;width:80%;}