footer {
    background-color: #111;
    color: #f1f1f1;
    padding: 40px 20px;
    font-family: Arial, sans-serif;
  }

  .footer-container {
    display: flex;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: auto;
    justify-content: space-between;
  }

  .footer-column {
    flex: 1 1 250px;
    margin: 20px;
  }

  .footer-column h3 {
    border-bottom: 1px solid #555;
    padding-bottom: 10px;
    margin-bottom: 15px;
  }

  .footer-column ul {
    list-style: none;
    padding: 0;
  }

  .footer-column ul li {
    margin-bottom: 10px;
  }

  .footer-column ul li a {
    color: #ccc;
    text-decoration: none;
  }

  .footer-column ul li a:hover {
    color: #fff;
  }

  .footer-social {
    margin-top: 20px;
  }

  .footer-social a {
    font-size: 20px;
    margin-right: 15px;
    color: #ccc;
    text-decoration: none;
  }

  .footer-social a:hover {
    color: #fff;
  }

  .footer-bottom {
    text-align: center;
    margin-top: 40px;
    font-size: 14px;
    color: #aaa;
  }

  @media (max-width: 768px) {
    .footer-container {
      flex-direction: column;
      align-items: center;
    }

    .footer-column {
      margin: 10px 0;
    }
  }