How to edit font size in FlexProfile?

Hello!

I have tried to search for the answer in pervious posts, but I cannot seem to find the answer. Does anyone know where I can find/change the code to change the font size for form fields in the flexprofile? Is it a flex profile edit or a theme css edit? Where can the code be found?

Thanks again for everyone's help!

Form and related plugins

Form and related plugins

User-generated content, flexible user and group profiles, registration forms, custom file forms