The redesigned interface to extensions and other add-ons for Mozilla Firefox

https://twitter.com/grahamperrin/status/923584097691295745

A frame from the screen recording:

From https://blog.mozilla.org/addons/2017/10/25/test-new-look-addons-mozilla-org/comment-page-1/#comment-224529:

… just one Firefox container, dedicated to testing the new look.

Whenever I want to compare the traditional look to the new, I simply send the traditional page to my ‘mobile’ (new look) container.

To regain the traditional look: de-contain the page.

– there’s Decontain, in the frame. A feature of this extension: