style refactor on Form Summary and other components

[mpflex]

Update style on Form Summary and elsewhere it is used

#Description/Context

Addresses comment found here

I would move these to the classname.

.height-15 and .overflow-auto are the CSS utilities provided by USWDS. I don't think there's a utility for resize, but since we're already including styles here, you can put a new rule in the imported styles module.

#Definition of Done