Bootstrap or Responsive Dashboard

I’ve just installed HASS and am very happy with it so far. I also installed HADashboard as I thought I’d read that it used a responsive layout. I don’t think it does, or I’ve missed something to make it responsive.

So…

  1. Is it possible to make it responsive?
  2. Are there other systems that are responsive?

I built my own system before finding HASS and used Bootstrap 4 as the building blocks. I’m ok with html and CSS but this is all new to me. Is there some sort of templating system where I can just build my own html and CSS but put something in so that it pulls the entities I want through?