Screenshot scrolling animation

Design help Animations & Interactions
1

Hi, does anyone know how to create the effect on this website https://www.theflipside.io/ ? It is under the section " See the big picture with the best points from both sides" where the screenshot is scrolling in a tablet.

Thanks!

Here is my public share link: LINK
(how to access public share link)

2

could be just an animated gif.
or interaction of an image while scrolling in view.
It would be a div with overflow hidden, interaction loop etc.
Lots of ways.