</li>
          <li><a href="../office-hours.html">Office Hours</a></li>
          <li class="nav-item dropdown">
            <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown"
              aria-haspopup="true" aria-expanded="false">
              Staff
            </a>
            <ul class="dropdown-menu" aria-labelledby="navbarDropdown">
              <li><a href="../instructor.html">Instructors</a></li>
              <li><a href="../TAs.html">TAs</a></