body {
    font-family: Arial, sans-serif;
    text-align: center;
    margin: 0;
    padding: 0;
    background-color: #222;
    color: #fff;
  }
  
  h1 {
    margin-top: 20px;
    font-size: 24px;
  }
  
  #game-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 20px auto;
  }
  
  canvas {
    border: 2px solid #fff;
    background-color: #333;
  }