Shrink image to background

Hi there

I just got started with Webflow and want to elevate my websites to the next level.

As an exercise I’d love to replicate a website like this: Big Red Boot | MSCHF where the images shrink and go to the background while scrolling.

Unfortunately I didn’t find any topic re this. Can anyone link me to something where I can learn this from?

After the user reached the End an “About” Element should appear from the bottom. And I’d also like for the Navigation bar to appear once the user reached the “About” Element but I’m sure I’ll figure this out somehow

Thank you for your help, it’s much appreciated.