I have the same problem on desktop and mobile. It appears on the SERVICES page or any page that pulls from Collections.
It’s minor and I could live with it but I’ve been pulling my hair out for weeks trying to figure out why I can’t shrink the space between the top menu and the section headline text.
I can make it larger really easily…
Thanks!
Here is my site Read-Only: LINK
(how to share your site Read-Only link)
Desktop ok now:- https://prnt.sc/C-FulflxXhsO
For mobile :-
https://prnt.sc/DXQvrfHSEckd
The issue is related to padding: 100px to make it smaller reset its value to be 0 or set smaller value. 
BTW: All your questions are related to lack of understanding basics of CSS. I will recommend to take some free courses found on YT to get familiar what CSS is and how it works and also finish at least Webflow-101 on Webflow University.
