body {
    font-family: Arial, sans-serif;
    text-align: center;
    background-color: #f0f8ff;
  }
  
  h1 {
    margin: 20px;
  }
  
  .game-board {
    display: grid;
    grid-template-columns: repeat(4, 100px);
    grid-gap: 15px;
    justify-content: center;
    margin-top: 20px;
  }
  
  .card {
    width: 100px;
    height: 100px;
    background-color: #87cefa;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: white;
    cursor: pointer;
    border-radius: 10px;
  }
  
  .card.flipped {
    background-color: #ffb6c1;
  }