body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
    color: #333;
  }

  header {
    background-color: #4686a0;
    color: rgba(255, 255, 255, 0.75);
    background-attachment: fixed;
    background-image: linear-gradient(45deg, #9dc66b 5%, #4fa49a 30%, #4361c2);
    padding: 20px;
    text-align: center;
  }

  main {
    max-width: 800px;
    margin: 40px auto;
    padding: 20px;
    background-color: white;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    border-radius: 8px;
  }

  h1, h2 {
    color: #005f73;
  }

  a {
    color: #0a9396;
    text-decoration: none;
  }

  a:hover {
    text-decoration: underline;
  }

  footer {
    text-align: center;
    padding: 20px;
    font-size: 0.9em;
    color: #666;
  }