OT: Mozilla: font size setting for toolbars, sidebar etc.?

[Mario Vukelic <mario.vukelic@chello.at>]

Hi,

sorry for being OT and stupid, but I can't find the place in mozilla
where I can change font sizes for mozilla itself, i.e. not font sizes
for displayed webpages, but for stuff like toolbars, sidepanel etc.
Maybe someone can give me a quick pointer.

Thanks in advance, M.

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