body {
      font-family: Arial, sans-serif;
      background-color: #e8f0e8;
      margin: 0;
      padding: 40px 20px;
    }

    h1 {
      text-align: center;
      color: #1b4332;
    }

    #playing-cards {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 20px;
    }

    .card {
      width: 180px;
      height: 260px;
      display: flex;
      justify-content: space-between;
      padding: 15px;
      box-sizing: border-box;
      background-color: white;
      border: 2px solid #333;
      border-radius: 12px;
      box-shadow: 3px 5px 10px #aaa;
    }

    .left {
      align-self: flex-start;
      font-size: 28px;
      font-weight: bold;
    }

    .middle {
      align-self: center;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-size: 30px;
    }

    .right {
      align-self: flex-end;
      font-size: 28px;
      font-weight: bold;
      transform: rotate(180deg);
    }

    .red {
      color: #d00000;
    }

    .black {
      color: #111;
    }