Paragraph breaks not showing up

When I write or edit a post the paragraph breaks are not showing up.

Here is an example page.
https://www.atlantafilms.com/2007/01/12/dear-teen-filmmakers-and-teen-media-programs/

I know it’s somewhere in the CSS (probably) I just can’t find it.

Is there another way to add breaks, I’ve tried <BR> and <br / > and <p>Stuff here</p> and nothing works.