Having trouble getting a page in a book to use the supplied font when Bloom Style is a custom file

We setup a Bloom book to have a custom style on our Introduction pages. We named the style Intro, it was based on Normal. We changed a few things, but left the font a lone as it was correct.
When we create a book using Reading App Builder, the pages with the ‘Normal’ style apply the correct font but the pages with ‘Intro’ style do not apply the proper font. Is there something else we need to do?