body{margin:0;padding:0;display:flex;justify-content:center;align-items:center;min-height:100vh;background:#1a1a1a}#app canvas{display:block}input[type=range]{-webkit-appearance:none;appearance:none;background:transparent;width:100%;cursor:pointer}input[type=range]::-webkit-slider-runnable-track{height:.8rem;background:#fff}input[type=range]::-moz-range-track{height:1rem;background:#fff}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;height:1rem;width:12px;background:#000;border:1px solid white;cursor:pointer;margin-top:-.15rem}input[type=range]::-moz-range-thumb{height:1rem;width:12px;background:#000;border:1px solid white;cursor:pointer}div,div *{-webkit-user-select:none;user-select:none}