*{box-sizing:border-box;margin:0;padding:0}body{background:#2c3e50;justify-content:center;align-items:center;min-height:100vh;font-family:sans-serif;display:flex;overflow:hidden}#app{justify-content:center;align-items:center;display:flex}#game-canvas{touch-action:none;border-radius:8px;max-width:100vw;max-height:100vh;box-shadow:0 4px 20px #0006}