body, html {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: #333;
    font-family: Arial, sans-serif;
  }
  
  .container {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  canvas {
    background: #000;
    border: 1px solid #fff;
  }
  
  .score {
    color: #fff;
    margin-top: 20px;
    font-size: 24px;
  }
  
  .game-over {
    display: none;
    color: #ff0000;
    font-size: 32px;
    margin-top: 20px;
  }
  
  .restart-button {
    margin-top: 10px;
    padding: 10px 20px;
    font-size: 18px;
    background-color: #4cafab;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
  }
  
  .restart-button:active {
    background-color: #388e3c;
  }
  
  .controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 20px;
  }
  
  .horizontal-controls {
    display: flex;
    justify-content: center;
    margin: 5px 0;
  }
  
  .control-button {
    width: 60px;
    height: 60px;
    margin: 5px;
    font-size: 18px;
    background-color: #4cafab;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
  }
  
  .control-button:active {
    background-color: #388e3c;
  }