I want the elements to move down relative to the top of the page when the user over scrolls on mobile for a refresh. I would also like the opposite effect to happen when the user over scrolls at the bottom of the page. This feature will add a nice touch to the user's experience, making it more smooth.
Check out this MDN link on mobile. You'll notice that when you over scroll, the scroll position returns a negative number at the top and exceeds the element's length at the bottom. I think this number could potentially be used to create this feature.