How to add a certain interaction

I want to add an interaction where the website scrolls till the trees and then that part stops scrolling there but the bottom part continues scrolling.

Thank you in advance!


Here is my public share link: https://preview.webflow.com/preview/knowledge-units?utm_medium=preview_link&utm_source=designer&utm_content=knowledge-units&preview=cb2ccd4b431e7c218b5545e8193a63c4&mode=preview