:root{--letterbox:#0d1117}*{box-sizing:border-box;margin:0;padding:0}html,body{background:var(--letterbox);width:100%;height:100%;overflow:hidden}body{touch-action:none;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none;overscroll-behavior:none;justify-content:center;align-items:center;display:flex}#game{line-height:0}#game canvas{image-rendering:pixelated;display:block}