body {
      font-family: Arial, sans-serif;
      background-color: #f2f2f2;
      margin: 0;
      padding: 0;
  }

  h1 {
      text-align: center;
      margin-top: 30px;
  }

  #board {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      grid-template-rows: repeat(3, 1fr);
      gap: 10px;
      width: 300px;
      margin: 20px auto;
  }

  .cell {
      width: 100px;
      height: 100px;
      border: 1px solid var(--linkc);
      display: flex;
      justify-content: center;
      align-items: center;
      font-size: 48px;
      cursor: pointer;
      background-color: var(--backg);
      transition: background-color 0.3s;
  }

  .cell:hover {
      background-color: var(--hovg);
  }