What I said right before the part you quoted was "Writing a modern browser may be an impossible feat" and the part you quoted talks about a "barebones HTML rend

What I said right before the part you quoted was "Writing a modern browser may be an impossible feat" and the part you quoted talks about a "barebones HTML renderer". What I'm describing is labels and images in a VStack. This is something any operating system UI toolkit (open source ones too!) can do.