Rated 5 out of 5 stars

Από τον/την SSRREEDD στις Νοέμ. 8, 2019 · μόνιμος σύνδεσμος

ATTENTION to users of TB 68 or newer. For your custom styles to work you need to set " toolkit.legacyUserProfileCustomizations.stylesheets" preference setting in "Options/Options/Config Editor..." to TRUE. (And you do not need this extension if you know CSS a bit.)