How do i remove the rounded corners - and floating panels inside firefox?

[monegator]

Today i opened a PDF and i am welcomed with a floating panel and the goddamn rounded corners.

Also, apparently we're getting NOVA.

Thanks, but no thanks

How do i disable those? forever?

Also, fire whoever is pushing the rounded crap without letting the user have their say: material design 3 is crap (looking at you firefox mobile), rounded corners are crap, floating panels are even worse. First think i do on a KDE machine is disable floating panels, and everything goes back to being normal again.

[Fledi]

about:config
browser.nova.enabled
change true to false 

[dftf]

In addition, for the PDF screen, you may need to set "pdfjs.enableNova" to "false" also

[Agentvirtuel]

Bonjour

About, how to Disable this disturbing nova design, see also, this discussion thread
https://connect.mozilla.org/t5/discussions/how-to-disable-this-disturbing-nova-design/td-p/139558

About, allow users to report the spam bots clogging up this website
https://connect.mozilla.org/t5/discussions/allow-users-to-report-the-spam-bots-clogging-up-this-webs...