ss="nav-item">
              <a class="nav-link" href="#">Link</a>
            </li>
            <li class="nav-item">
              <a class="nav-link" href="#">Link</a>
            </li>
            <li class="nav-item dropdown">
              <a class="nav-link dropdown-toggle" href="#" id="dropdown" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
              <div class="dropdown-menu" aria-labelledby="dropdown">
                <a class="dropdown-item" href="#">Action</a