GTK font sizes

[Ed Greshko]

Is there anyway to control the font size of GTK+ applications in the new plasma5 environment?

Use to be in system-settings within fonts you checked that GTK+ applications should use the KDE settings but that no longer exists.  Also, if you go into GNOME and use gnome-tweak-tool you can change the settings but they are not picked up going back to KDE.

Would like to make my fonts in T-bird just a little be larger.

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Sorta what I want to say when folks habitually complain about Fedora - https://youtu.be/ZArl8fTfub4