menu font size will be reduced ,if used T4BU

T4 pagebulider will directly affect how the JA template menu is displayed and its font size.
you can check any

if click “t4 test ”The menu font size will be reduced.

menu butttom & T4 test button

I added override for the font-size, could you take a look?

Where can I change the font size setting?
I will continue to use this template and editor, and I hope I can modify this part myself.

It's body font size declared in template style so I added the override in custom.css file of template, you can adjust the value as you wish there.

Thanks lot , I can setup this and is work.