I have two headers, one only showing on the front page and the other one on the entire site apart from the front page. The front page header works fine on all screens. The other header though is hidden as soon as the Mobile Menu Breakpoint hits. I have modified all header paddings, etc, I cannot see what is going on.
On the URL submitted, try viewing any page apart from the homepage, you will see the issue. Once the mobile breakpoint hits, the whole page shifts upwards. I tried removing all custom CSS, it didn’t fix the issue. I am hoping it’s a silly thing that I have overlooked!