<li class="my-2">
    <button class="btn d-inline-flex align-items-center collapsed" data-bs-toggle="collapse" aria-expanded="false" data-bs-target="#tm_dsbd-collapse" aria-controls="tm_dsbd-collapse">Telemetry Dashboard ▽</button> 
    <ul class="list-unstyled ps-3 collapse" id="tm_dsbd-collapse">
      <li>
        <a class="d-inline-flex align-items-center rounded" href="/tm_dsbd/grafana">grafana</a>
      </li>
    </ul>
  </li>