Example
Markup: components/molecules/navigation/nav-vertical.twig
<ul class="nav nav-vertical">
          <li class="nav-item">
              <a class="nav-link active" href="#" data-toggle="tooltip" data-placement="left" title="Subvraag 1"></a>
          </li>
          <li class="nav-item">
              <a class="nav-link " href="#" data-toggle="tooltip" data-placement="left" title="Subvraag 2"></a>
          </li>
          <li class="nav-item">
              <a class="nav-link " href="#" data-toggle="tooltip" data-placement="left" title="Subvraag 3"></a>
          </li>
  </ul>
Source: components/molecules/navigation/_nav-vertical.scss, line 1