I made an HTML/DOM viewer you can paste into your console to view or debug any website in 3D. Choose from random/gradient/clear colors or whether layers have sides.

You can save it as a bookmarklet so it's 1 click away. It's just a tiny IIFE JS function.
https://gist.github.com/OrionReed/4c3778ebc2b5026d2354359ca49077ca