Hello Francesco, thank you for your reply.
Unfortunately, I haven’t been able to reduce that spacing
https://prnt.sc/GBgM7l26GVzg
I don’t know how to edit the line of code in the site editorstyle="padding-top:40px;padding-bottom:40px"
also, I couldn’t find the option you showed me when I want to change the spacing in the template I created for the header (won’t this affect also the desktop version of the website? The goal is only to reduce it for the mobile version)