No idea what those are or where they came from. Means nothing as description is not there.

I think those are called Scroll Bars. But again no idea where you are talking about.

So get ready, learning curve ahead : https://www.howtogeek.com/333110/how-to-customize-firefox-quantum-and-remove-the-white-space-around-the-title-bar/

https://stackoverflow.com/questions/6165472/custom-css-scrollbar-for-firefox<b> Here is your answer.

https://www.userchrome.org/ https://www.userchrome.org/what-is-userchrome-css.html https://www.accessfirefox.org/Firefox_Accessibility_Themes.php https://www.accessfirefox.org/Theme-Font-Size-Changer.php https://github.com/axydavid/FirefoxUI/blob/master/README.md https://github.com/wilfredwee/photon-australis

There is a dedicated forum on a sub Reddit, Code is not all in one place.

Please let us know if this solved your issue or if need further assistance.

It's not a scrollbar. As mentioned above, it's the default dropdown styling indicator for Firefox

Something like https://www.bootply.com/98425

I think they're working on it.

New WIP design: https://bug1421229.bmoattachments.org/attachment.cgi?id=8932432

Bug https://bugzilla.mozilla.org/show_bug.cgi?id=1409613

Yeah that other dropdown looks much nicer. modern. I hope they update it soon.

Any chance you can look over my unanswered tickets from like a week ago? I dunno if you work at mozilla but ive had other tickets answered and others ignored

To your above post : Support Volunteers work on what is in front of them, and yours was in the wrong place : https://support.mozilla.org/en-US/questions

All your questions have been updated to say : Go to the IOS Forum https://support.mozilla.org/en-US/questions/ios

If this has to do with a IOS Phone this not the forum either.

Desktops and Laptops, Tablets Only.

This question has now been asked and answered.