body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background-color: #f4f4f9;
    color: #333;
  }
  
  header {
    background-color: #007bff;
    color: white;
    padding: 1rem 0;
    text-align: center;
  }
  
  header img {
    height: 50px;
  }
  
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
  }
  
  .title {
    text-align: center;
    margin: 2rem 0;
  }
  
  .title h1 {
    font-size: 2rem;
    color: #007bff;
  }
  
  .grid {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
  }
  
  .card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    width: calc(33.333% - 2rem);
    max-width: 300px;
  }
  
  .card img {
    width: 100%;
    height: auto;
  }
  
  .card a {
    display: block;
    color: #007bff;
    text-decoration: none;
    font-weight: 500;
    margin: 1rem 0;
  }
  
  .card a:hover {
    text-decoration: underline;
  }
  
  footer {
    text-align: center;
    padding: 1rem;
    background-color: #333;
    color: white;
    margin-top: 2rem;
  }
  
  @media (max-width: 768px) {
    .card {
      width: calc(50% - 2rem);
    }
  }
  
  @media (max-width: 480px) {
    .card {
      width: 100%;
    }
  }