body {
      font-family: Arial, sans-serif;
    }
    .topbar {
      background-color: #f0f8ff;
      font-size: 14px;
      padding: 10px 0;
    }
    .topbar i {
      margin-right: 5px;
    }
    .topbar a {
      margin-left: 15px;
      color: #333;
      text-decoration: none;
    }
    .social-icons a {
      margin-left: 10px;
      color: #0077b6;
    }
    .navbar-nav .nav-link {
      margin-right: 20px;
    }
    .navbar-brand {
      font-weight: bold;
      color: #0077b6;
    }
    .dropdown-menu {
      animation: fadeIn 0.3s ease-in-out;
    }
    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(10px); }
      to { opacity: 1; transform: translateY(0); }
    }