*{margin:0;padding:0;box-sizing:border-box}html,body{width:100%;height:100%;overflow:hidden;background:#4a90d9;touch-action:none;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none}#game{position:fixed;inset:0;width:100%;height:100%}#game canvas{display:block;width:100%!important;height:100%!important}