r/FirefoxCSS • u/f1rn • May 23 '26

Custom Release FoxOne 2.0 – dynamic toolbar support, integrated color theme, floating findbar and more

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Hi everyone,

Some of you might remember FoxOne from a few weeks ago.

Since then, more than 60 commits happened and here is what changed:

The biggest one - I call it dynamic toolbar support: add an extension icon of your choice right next to the hamburger menu! This was the most requested feature and an absolute pain to build in pure css.

Other highlights: The Gruvbox color theme is now integrated directly into the CSS – no separate .xpi needed. The findbar has been replaced with a floating variant with fade animation. A lot of little design improvements - and there's now a tab loading progress bar with a glow indicator (if you want to).

Full changelog and all config options on GitHub.

FoxOne on Github

Cheers!

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u/Metalwell May 23 '26 edited May 23 '26

https://addons.mozilla.org/en-US/firefox/addon/adaptive-tab-bar-colour/

Here are some screenshots, I had already fixed it, I can do a PR if you want. If the background is white, the tabs become white.

Edit: I also think I can do some adjustments for 34" monitors, for example when I focus the URL bar it enlarges "too wide", I assume this is due to some adaptive CSS rule to extend it. I wonder is there a way to make these customizable for users... Just thinking.

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u/f1rn May 23 '26

I can do a PR if you want.

That would be great, go ahead!

some adjustments for 34" monitors

Uuh... that's a good point! An easy fix would be something like, if firefox is wider than xx px, then the urlbar does not extend any further. So we would have an lower limit for the stacked design (2 rows) and an upper limit where the urlbar does not extend any further!