* {
    box-sizing: border-box;
  }

  body {
    font-family: 'Ubuntu', sans-serif;
    margin: 0;
    padding: 0;
    background: #f4f4f4;
    color: #333;
  }

  .container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
  }

  .header {
    text-align: center;
    padding-bottom: 2rem;
  }

  .site-title {
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
  }

  .site-affilation ul {
    list-style: none;
    padding: 0;
    margin: 0.5rem 0;
  }

  .site-affilation .email {
      margin-top: 0.8rem;
  }

  .site-affilation li {
    margin: 0.3rem 0;
    font-weight: 300;
  }

  .nav.social a {
    margin: 0 10px;
    color: #333;
    text-decoration: none;
    transition: color 0.3s ease;
  }

  .nav.social a:hover {
    color: #0073e6;
  }

  .section {
    margin-top: 2rem;
  }

  h4 {
    margin-top: 0;
  }

  @media (max-width: 600px) {
    .site-title {
      font-size: 1.8rem;
    }

    .nav.social {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
    }

    .nav.social a {
      margin: 0.5rem;
    }
  }

  .footer-copy {
    display: block;
    margin: 2.5rem 0 2rem;
    text-align: center;
    font-size: smaller;
  }
  .footer-copy {
    margin: 4.5rem 0 2.5rem;
  }