body {
      font-family: Arial, sans-serif;
      margin: 0;
      padding: 0;
    }

    .site-header {
      background: #003366;
      color: white;
      padding: 1em;
      text-align: center;
    }

    .site-header a {
      color: white;
      text-decoration: none;
      font-size: 1.5em;
    }

    nav ul {
      list-style: none;
      padding: 0;
      margin: 1em 0 0 0;
      display: flex;
      justify-content: center;
    }

    nav li {
      margin: 0 15px;
    }

    nav a {
      color: white;
      text-decoration: none;
    }

    .hero-section {
      background: #e5e5e5;
      padding: 3em 1em;
      text-align: center;
    }

    .hero-section h2 {
      margin: 0 0 10px;
    }

    .content-section {
      display: flex;
      justify-content: space-around;
      padding: 2em 1em;
      flex-wrap: wrap;
    }

    .column {
      flex: 1 1 300px;
      margin: 1em;
      padding: 1em;
      background-color: #f9f9f9;
      border: 1px solid #ddd;
      border-radius: 8px;
    }

    .site-footer {
      background: #f1f1f1;
      text-align: center;
      padding: 1em;
      margin-top: 2em;
    }