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Changing Firefox application fonts

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The fonts for all Firefox application areas (bookmarks toolbar, the three lines menu, bookmarks menu, etc) are in a small thin font that I can hardly read. I have changed this setting with no success in the Firefox options screen. What can I do to solve this issue?

The fonts for all Firefox application areas (bookmarks toolbar, the three lines menu, bookmarks menu, etc) are in a small thin font that I can hardly read. I have changed this setting with no success in the Firefox options screen. What can I do to solve this issue?
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I solved my problem: Windows>Control Panel>Fonts>Adjust Clear Type Fonts Select: Adjust Clear Type Text>Follow onscreen process Fonts changed

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Suluhisho teule

I solved my problem: Windows>Control Panel>Fonts>Adjust Clear Type Fonts Select: Adjust Clear Type Text>Follow onscreen process Fonts changed