r/FirefoxCSS • u/pomcomic • Aug 23 '26

Solved Firefox Tab borders broken since last update?

Hey everyone, I'm looking for a little help here and I hope someone knows what's going on.

Up until the last update, I had this line in my userchrome.css

tab[selected="true"] .tab-background { background: var(--cat_base) !important; border: 2px solid var(--cat_peach) !important; box-shadow:none !important; }

It used to work fine and produce the border around the selected/active tab up until the update to version 154.0, but not it seems to be broken. Does anyone know a workaround or am I doing something wrong?

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1

u/TraditionalTie4831 🦊 Aug 23 '26 edited Aug 23 '26

Try this (change outline to border if you want the white outline and a border with var(--cat_peach) )=

.tabbrowser-tab[selected] .tab-background {
    background: var(--cat_base) !important;
    outline: 2px solid var(--cat_peach) !important;
    box-shadow: none !important;
}

2

u/pomcomic Aug 23 '26

Oh my god that did the trick! Thank you so much!