src navbar

<nav class="navbar navbar-expand-lg">
        <!--============ brabd ============-->
        <a class="navbar-brand" href="/"><img src="{% static 'customers/img/postItLogo.jpg' %}" alt="pic" style="max-height: 55px;"></a>
        <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#main-menu"
          aria-controls="main-menu" aria-expanded="false" aria-label="Toggle navigation">
          <i class="fas fa-bars"></i>
        </button>
        <div class="collapse navbar-collapse" id="main-menu">
          <!--============ benu links ============-->
          <ul class="navbar-nav ml-auto">

            <!-- <div class="dropdown">
              <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                Dropdown button
              </button>
              <div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
                <a class="dropdown-item" href="#">Action</a>
                <a class="dropdown-item" href="#">Another action</a>
                <a class="dropdown-item" href="#">Something else here</a>
              </div>
            </div> -->

            <li class="nav-item text-uppercase">
              <a class="nav-link" href="">QMS</a>
            </li>
            <li class="nav-item text-uppercase">
              <a class="nav-link" href="">PASSPORT</a>
            </li>
            <li class="nav-item text-uppercase">
              <a class="nav-link" href="">FAQ</a>
            </li>
          </ul>
        </div>
      </nav>