Is there a way to make a web/iframe card full screen and overlay other cards with absolute position?

Configuration Frontend
1

I would like to display an iframe as a full-screen web page (I use Dakboard), but would like to overlay the Lovelace thermostat controls with absolute position. Is this possible?

2

A possible way:

  1. Add picture elements card to a Panel view.
  2. Add a custom element - your iframe card. Make it occupying whole available area.
  3. Add other cards as custom elements.