
        <nav class="navbar navbar-expand-lg bg-dark">
            <div class="container-fluid">
            <a class="navbar-brand" href="#">Navbar</a>
            <button class="navbar-toggler bg-light" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
                <span class="navbar-toggler-icon navbar-dark"></span>
            </button>
            <div class="collapse navbar-collapse" id="navbarNav">
                <ul class="navbar-nav">
                <li class="nav-item">
                    <a class="nav-link active" aria-current="page" href="/">Home</a>
                </li>
                <li class="nav-item">
                  <a class="nav-link active" aria-current="page" href="/ta">Take Attendance</a>
              </li>
                <li class="nav-item dropdown">
                    <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-bs-toggle="dropdown" aria-expanded="false">
                      Activities
                    </a>
                    <ul class="dropdown-menu" aria-labelledby="navbarDropdown">
                      <li><a class="dropdown-item" href="/research">Researching activities</a></li>
                      <li><a class="dropdown-item" href="/music">Music activities</li>
                        <li><a class="dropdown-item" href="/container">Containing activities</li>
                      <li><hr class="dropdown-divider"></li>
                      <li><a class="dropdown-item" href="#">Something else here</a></li>
                    </ul>
                  </li>
                </ul>
            </div>
            </div>
        </nav>