Firefox Customs

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Post your unsupported Firefox customizations here!

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What is userChrome.css? (kb.mozillazine.org)

submitted 2 years ago by [email protected] to c/[email protected]

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[–] simo97 9 points 2 years ago* (last edited 2 years ago) (1 children)

It is a file / folder that, when enabled, allow a user to customize the interface of Firefox.

For example, I use tree style tabs, so my tabs are on the right. To remove the standard tab bar, I used the userChrome.css.

/* hides the native tabs */
#TabsToolbar { visibility: collapse !important; }

#sidebar-header {
  visibility: collapse !important;
}

[–] Krompus 3 points 2 years ago

OP linked a wiki article that explains it in depth.