Home for viewport-related issues

Hi www-style,

I've collected some viewport-related interop research in an explainer I
wrote a while back[1]. This doc tracked issues like how we decide what page
scale to load a page at, how position: fixed elements and overflow: hidden
work in the presence of pinch-zoom, etc.

bballo@mozilla.com has been working on squashing some of these interop
issues and so far we've been using my GitHub as a place to collect issues
and discussion. I think it'd be beneficial to move the discussion into a
more official+public place, perhaps a WICG GitHub repo. I was wondering if
anyone had thoughts on where this might belong or if there's an existing
spec/repo viewport work might fit well into.

I think these kind of issues are closely aligned with the device-adaptation
spec [2]. There's also the question of the visualViewport API spec [3].
This is currently a WICG draft but I believe others are now implementing it
so we could probably start moving it out of "incubation". That's also
closely related to these discussions.

WDYT?

Thanks,
David

[1]
https://github.com/bokand/bokand.github.io/blob/master/web_viewports_explainer.md
[2] https://www.w3.org/TR/css-device-adapt-1/
[3] https://wicg.github.io/visual-viewport/index.html