Expanding reg form fields.

It's been a few months since I last looked at my CB registration form and I've noticed changes.
The font size is smaller and tough for old ones like me to read. Where do I go to adjust the field font sizing?
Next, since I have a long form, I had certain fields not visible until a check box of three selections was checked, which would expand the fields related to that check box. That function is gone and I can't remember how or where I did the changes.
Even the values for check boxes, radio buttons or multi select lists controls I cannot find.
Am I getting old or has there been core changes I didn't notice over the last year?
I need to be put back on track.

The font size is smaller and tough for old ones like me to read. Where do I go to adjust the field font sizing?

See the below regarding small font size.

www.joomlapolis.com/forum/6-news-and-publicity/239316-community-builder-2-2-bootstrap-4-release?start=6#305472

Next, since I have a long form, I had certain fields not visible until a check box of three selections was checked, which would expand the fields related to that check box. That function is gone and I can't remember how or where I did the changes.

Showing and hiding fields based off the values of other fields is done using CB Conditional. If you have CB Conditional installed it's possible it's just massively out of date and not compatible with the new Bootstrap 4 that CB now uses and you'll need to update.

Even the values for check boxes, radio buttons or multi select lists controls I cannot find.

Those are configured in CB > Field Management when editing those fields.