div slot="nav-logo" style="width:100%; display: flex;justify-content: center;">
        <button class='btn' onclick="document.getElementById('thedoc').setAttribute('theme', 'dark')" >Dark</button>
        <button class='btn' onclick="document.getElementById('thedoc').setAttribute('theme', 'light')" >Light</button>
      </div>
  </rapi-doc>
  </body>
</html>