Large gaps between paragraphs but only on a PC

Hello

I've created a site and done all my testing, and it's looking really great on a Mac using Chrome. When I view it on any PC, i.e., Dell, SmartBook, etc., and on any browser, there are massive gaps/spaces between all paragraphs on all pages. What am I doing wrong?

https://bluebird-oriole-6e3p.squarespace.com

password: wicklow

Here are two screenshots from the PC with the large spacing. I want to mention that I have Browserstack, and it looks fine on that, but go to a real PC, and that's when you see the space. 

After doing some testing on a PC, I'm seeing if the browser is the size of the laptop or a larger device; that's when the large gaps come into play. But, If I make the browser a smaller size, it looks perfect. However, on a Mac, the gaps only appear when I blow the browser up to a ridiculous size such as 2100x1300.

Thoughts?

You can consider changing section with problem to Classic Editor section

If you can't do it, let me know, we will try some CSS code to remove space