Page Content Appearing Behind Header

Hello,

I have an issue where my site content is appearing behind the navigation header.

I'm using the plugin Elementor so I normally just fix it by adding margin to the first section of the page. However, I am also restricting access to some pages using Paid Membership Pro and I can't seem to edit the login page.

For example, on this page:
https://nontechnicalacademy.com/build-your-big-idea-course/

It seems to be a site wide problem though because as mentioned, if I were to create a new page using Elementor, the first section I add will also appear behind the header until I adjust the margins.