Parallax effect on single flexbox/grid elements

Is it possible to create different parallax scrolling times on different elements in a grid or flexbox with 10+ elements.

Client wants an overview of portfolio work with lightbox and the elements should have offsetted scrolling. Here as an example for the way it should load in the " mein Angebot" section:

Thanks a lot for any input!

Here is my public share link: LINK
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