body {
      font-family: Arial, sans-serif;
    }
    .sidebar {
      height: 100vh;
      position: fixed;
      top: 0;
      left: 0;
      padding: 1rem;
      border-right: 1px solid #ddd;
      overflow-y: auto;
    }
    .content {
      margin-left: 250px; /* largura do menu lateral */
      padding: 2rem;
    }
    .sidebar .nav-link {
      color: #333;
    }
    .sidebar .nav-link.active {
      font-weight: bold;
      color: #0d6efd;
    }