body{margin:0;padding:0;display:flex;justify-content:center;align-items:center;height:100vh;background-color:#f0f0f0;touch-action:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}.game-container{position:relative;width:800px;height:400px}.game-canvas{position:absolute;top:0;left:0}.game-over-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background-color:#000000b3;color:#fff;display:flex;flex-direction:column;justify-content:center;align-items:center;z-index:10}.game-over-overlay button{margin-top:20px;padding:10px 20px;font-size:18px;cursor:pointer}.start-screen{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center}.start-button,.submit-name-button{font-size:24px;padding:10px 20px}.player-name-input{font-size:24px;padding:10px}.controls{position:absolute;bottom:10px;left:0;right:0;display:flex;justify-content:space-around}.control-button{font-size:24px;padding:10px 20px;background-color:#ffffff80;border:none;border-radius:5px}.scoreboard{display:block;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background-color:#fff;padding:20px;border:2px solid black;text-align:center}.high-scores{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background-color:#000c;color:#fff;padding:20px;border-radius:10px;text-align:center}.high-scores h2{margin-bottom:20px}.high-scores ol{list-style-position:inside;padding:0}.high-scores li{margin-bottom:10px}.high-scores button{margin-top:20px;padding:10px 20px;background-color:green;color:#fff;border:none;border-radius:5px;cursor:pointer}body{font-family:Arial,sans-serif;margin:0;padding:20px;background-color:#f0f0f0}h1{color:#333}