/* General Styles */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
  }
  
  header {
    background: #2478d9;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
  }
  
  header h1 {
    margin: 0;
  }
  
  nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
  }
  
  nav ul li {
    margin: 0 1rem;
  }
  
  nav ul li a {
    color: #fff;
    text-decoration: none;
  }
  
  .hero {
    background: #f4f4f4;
    padding: 2rem;
    text-align: center;
  }
  
  .content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    padding: 1rem;
  }
  
  .content article {
    background: #e2e2e2;
    margin: 1rem;
    padding: 1rem;
    flex: 1 1 calc(33.333% - 2rem);
    box-sizing: border-box;
  }
  
  footer {
    background: #2478d9;
    color: #fff;
    text-align: center;
    padding: 1rem 0;
    margin-top: 2rem;
  }
  
  /* Responsive Design */
  @media (max-width: 768px) {
    nav ul {
      flex-direction: column;
      align-items: center;
    }
  
    .content article {
      flex: 1 1 calc(50% - 2rem);
    }
  }
  
  @media (max-width: 480px) {
    .content article {
      flex: 1 1 100%;
    }
  }