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grey bar on version 65.0

Version 65 update moved the tabs back to the top and now I also have a grey bar across the top of the window

Version 65 update moved the tabs back to the top and now I also have a grey bar across the top of the window
Attached screenshots

Chosen solution

See this answer - https://support.mozilla.org/en-US/questions/1248277#answer-1192325 - for "tabs on bottom" userChrome.css code that does work with Fx 65.

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All Replies (2)

What "userChrome.css" did you use?

Chosen Solution

See this answer - https://support.mozilla.org/en-US/questions/1248277#answer-1192325 - for "tabs on bottom" userChrome.css code that does work with Fx 65.