body {
    margin: 0;
    padding: 0;
    font-family: 'Gowun Dodum', sans-serif;
    background: #fffaf0;
    text-align: center;
    color: #333;
  }
  
  header {
    padding: 40px 20px 20px;
  }
  
  h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
  }
  
  p {
    font-size: 1.2rem;
    color: #666;
  }
  
  .card-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 20px;
    padding: 30px;
    max-width: 800px;
    margin: 0 auto;
  }
  
  .card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    padding: 30px 20px;
    font-size: 2.5rem;
    transition: transform 0.3s ease;
    animation: shuffle 3s infinite ease-in-out;
    position: relative;
  }
  
  .card span {
    display: block;
    margin-top: 10px;
    font-size: 1rem;
    color: #444;
  }
  
  .card:hover {
    transform: scale(1.1);
  }
  
  @keyframes shuffle {
    0% { transform: translateY(0px); }
    20% { transform: translateY(-3px); }
    40% { transform: translateY(2px); }
    60% { transform: translateY(-2px); }
    80% { transform: translateY(1px); }
    100% { transform: translateY(0px); }
  }
  
  .card:nth-child(1) { animation-delay: 0s; }
  .card:nth-child(2) { animation-delay: 0.3s; }
  .card:nth-child(3) { animation-delay: 0.6s; }
  .card:nth-child(4) { animation-delay: 0.9s; }
  .card:nth-child(5) { animation-delay: 1.2s; }
  .card:nth-child(6) { animation-delay: 1.5s; }
  .card:nth-child(7) { animation-delay: 1.8s; }
  .card:nth-child(8) { animation-delay: 2.1s; }
  .card:nth-child(9) { animation-delay: 2.4s; }