Make horizontal scroll sticky

Hi everyone,
I have a bit of an issue. I am trying to create a new page and decided that some horizontal scrolling might me neat. So I followed this tutorial: Advanced interactions: Horizontal scroll in Webflow - YouTube
Since I need to use a collection list for the content I cannot follow the tutorial to the dot but I believe I did most of it right. I managed to get the horizontal scroll to work, but I did not get the vertical scroll to stop which scrolling horizontally. Any chance any of you could point me into the right direction?

https://preview.webflow.com/preview/ihopa-2021?utm_medium=preview_link&utm_source=designer&utm_content=ihopa-2021&preview=38fa9c12ce432793678b1735b7ebb021&pageId=62056c12bb695ef484d52345&workflow=preview

Thanks, M