Is there any way to alter the default Form Wizard templates?

I want to change the default fonts and sizes of fields and labels because they are so small you need a microscope to see them. Are they stored as templates somewhere, or would I need to edit the source code to change them?

I don’t believe this has anything to do with a template. With the form visible, tiny fonts & fields, look on the lower right corner of the form.

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Moving the slider to the right will increase the size.