Question About Sticky Vertical Scroll Slider


I created a slider in the middle of the page, but it seems like an infinite loop. Is it possible to limit the numbers of the slider change so that the user can continue scrolling through the page, other than trapping in the slider?

Here is an example of what I want to accomplish.

Here is my real-only link.

Here is my published site link.

Can someone take a few minutes to help me with this problem? I really appreciate your help!!!


Here is my site Read-Only: LINK
(how to share your site Read-Only link)