body {
    margin: 0;
    padding: 0;
    background: #222;
    font-family: Arial, sans-serif;
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    height: 100vh;
  }
  
  h1 {
    margin-top: 20px;
    margin-bottom: 10px;
  }
  
  #gameCanvas {
    background: #333;
    border: 2px solid #fff;
    display: block;
    margin: 0 auto;
    margin-bottom: 10px;
  }
  
  #score {
    font-size: 1.2rem;
    margin-bottom: 20px;
  }