Help us test Horizon, our newest theme

[awesomerobot (Kris)]

@NateDhaliwal

The machine traslate button grows very large when the composer is open.

Will be fixed by the combo of UX: fix scaling of translator button in topic-progress bar (#270) · discourse/discourse-translator@0908e23 · GitHub

and

https://github.com/discourse/horizon/pull/118

@tobiaseigen

With horizon, I am unable to scroll to the very bottom of a topic list with the composer open.

This will fix it

https://github.com/discourse/horizon/pull/119