body{margin:0;padding:0;font-family:Arial,sans-serif;background-color:#222;color:#fff;display:flex;justify-content:center;align-items:center;height:100vh}.game-container{text-align:center}#game-canvas{border:2px solid #fff;background-color:#333;margin:20px 0}.controls{margin-top:20px}button,select{padding:10px 20px;margin:0 5px;font-size:16px;background-color:#444;color:#fff;border:none;border-radius:5px;cursor:pointer}button:hover,select:hover{background-color:#555}h1{margin-bottom:20px}