Splash screen: make responsive

[cvan]

The splash screen seems to be designed for only large and tall screens:

Folks are certainly going to be landing on this page from mobile from Twitter. We should make sure the layout responds well to average sizes for mobile, tablet, and desktop.

[arturitu]

This page should be available only from Brandon's Chromium on a Windows machine. For mobile and user without this browser appears: http://unboring.net/tmp/the-composer/fallback.html

I use this logic to enter on fallback mode: if (navigator.getVRDisplays === undefined) { window.location.replace('fallback.html'); }

Any suggestion to improve it?

[cvan]

This page should be available only from Brandon's Chromium on a Windows machine.

What if I'm on Chrome for Android mobile with WebVR v1.0 support?

For mobile and user without this browser appears: http://unboring.net/tmp/the-composer/fallback.html

Right on! Looks good at mobile width 👍

[arturitu]

Make responsive on b69abf7