Re: [fullscreen] Styles of former fullscreen elements (#18)

I don't really get your meaning... But anyway, I propose that we track elements which request fullscreen in a separate stack, then remove the previous "fullscreen element" from, and add the new "fullscreen element" to the top layer when we touch that stack via `requestFullscreen()` or `exitFullscreen()`.

---
Reply to this email directly or view it on GitHub:
https://github.com/whatwg/fullscreen/issues/18#issuecomment-134171005