Parallax scroll on background?

How do I implement a Parallax effect on my background image of my hero section?

Something like this https://www.ndash.co/


Here is my public share link: LINK
(how to access public share link)

That link is blank. Have you looked at https://university.webflow.com/lesson/parallax-movement-on-scroll-interactions?

I’m learning too, but saw you didn’t have a response.