CSS Styling not working on desktop

Hello!

I noticed that a lot of my CSS styling has stopped displaying on desktop. Some headings and text are not showing up and default styles are missing on desktop. Even with an !important attribute, it’s not working anymore. The CSS is still there in the customizer, but it seems to be getting ignored. Strangely though, it still seems to be working on mobile view which has me really confused…

Any suggestions at all would be appreciated

Thanks in advance!
Armando

The page I need help with: [log in to see the link]