How do I change the Font Size for the blog posts and page body?

[Craig]

Does anyone know how to I change the Font Size for the blog posts and page body?

[Alyssa]

@marketingstream all posts should automatically have p tags wrapped around all text so add this code to your child theme custom.css:
.post p{font-size:18px;}
For the page body add this:
.page p{font-size:18px;}
BuddyPress pages are unique, let me know if you want to change that font size as well. A specific page for an example would be great as the code may increase the font-size on all buddypress pages.

[Jean-Pierre Michaud]

this would be great addition to the Customizer, because you have much of it just for colors, which can be enhanced by choosing at least the size, if not the family of fonts for specific places, like the content…