* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: 'Arial', sans-serif;
      display: flex;
      justify-content: center;
      align-items: center;
      min-height: 100vh;
      background-color: #f0f0f0;
    }

    .game-container {
      text-align: center;
      background-color: white;
      padding: 20px;
      border-radius: 10px;
      box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    }

    h1 {
      color: #333;
      margin-bottom: 20px;
    }

    .game-info {
      display: flex;
      justify-content: space-between;
      margin-bottom: 15px;
      font-size: 18px;
      font-weight: bold;
    }

    #game-board {
      border: 2px solid #333;
      background-color: #e8f5e9;
      margin-bottom: 20px;
    }

    .controls {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 15px;
      margin-bottom: 20px;
    }

    button {
      padding: 8px 16px;
      font-size: 16px;
      background-color: #4caf50;
      color: white;
      border: none;
      border-radius: 4px;
      cursor: pointer;
      transition: background-color 0.3s;
    }

    button:hover {
      background-color: #388e3c;
    }

    button:disabled {
      background-color: #cccccc;
      cursor: not-allowed;
    }

    .speed-control {
      display: flex;
      align-items: center;
      gap: 5px;
    }

    select {
      padding: 5px;
      border-radius: 4px;
      border: 1px solid #ccc;
    }

    .instructions {
      margin-top: 20px;
      padding: 10px;
      background-color: #f5f5f5;
      border-radius: 5px;
    }

    .instructions h3 {
      margin-bottom: 10px;
      color: #333;
    }

    .instructions p {
      color: #555;
    }