body {
  font-family: 'Roboto', sans-serif;
}

.site-header {
  background-color: #f8f9fa;
  border-bottom: 1px solid #dee2e6;
}

.site-header h1 {
  color: #2c3e50; 
  font-weight: 700;
}

.navbar-nav .nav-link {
  color: #333;
  font-weight: 500;
  transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover {
  color: #007bff;
}

.navbar-nav .nav-link.active {
  font-weight: bold;
  color: #007bff;
}