Minimize/expand feature request

[Phenomental]

Thanks for the great add-on!
I have recently started using vertical tabs in Edge and was glad to find that I could have a similar feature in Firefox.
The add-on would work even better for me, if I had the option to expand and minimize the sidebar as in Edge (see screenshots below).

Again, thank you for the great add-on!

Minimized:

Expanded:

[sumeshmeena]

Due to the limitations of the WebExtensions API, this is impossible. There exists a workaround with userChrome.css. It is not exactly as in edge but does the work.

https://github.com/Timvde/UserChrome-Tweaks/blob/master/sidebar/auto-hide-sidebar.css @gomita thanks to @piroor @Timvde