Page moves to the sides on mobile revealing white space, not stable

Hi everybody
When I open my website on mobile, the Home page is not fixed in place. If I put my thumb on the screen and try to scroll, it will move to the right \ left and up revealing the white space behind the hero picture I’ve got there.

The Contact page doesn’t do that with the right \ left sides BUT it does reveal the white space on the top when tugging down. I wouldn’t be concerned because I saw this on multiple wevsites but my Blog page doesn’t have any issues of the above.

Could you please point me in the right direction? This bug will be messing with my promo work.

Thank you!

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