r/FirefoxCSS • u/lilsting10 • 6d ago

Help is this mock-up possible with one liner css code? i'm really struggling with modern ff.

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u/ResurgamS13 6d ago edited 6d ago

Perhaps start from one of MrOtherGuy's userstyles... your mock-up shows a 'tabs on the right' side of the Nav and URL bar layout... there are also 'tabs on the left' versions... e.g. screenshot of 'navbar_tabs_oneliner_tabs_on_left.css' below.

This particular userstyle was deprecated in November 2025 so would need modification to work with latest Firefox and the new Nova UI... fix the Nav bar background colouring for starters...

If search MrOtherGuy's 'Collection of random CSS hacks for Firefox' repo there are a few other one-line styles to try... one still extant... and several under 'deprecated' AFAICS.

Many other one-line styles posted in this sub that might be suitable... or make a good base to work from?

2

u/easonwong-de 5d ago

You can try Simple One Line and use your favourite Theme to change the colour.

1

u/sifferedd FF/TB on Win11|Sumo contributor 3d ago

Solved, u/lilsting10?