Problem with layered scroll effect with sections

Hi everyone,

I would like to create an effect where the different sections are superimposed as you scroll, like “cards”, from bottom to top (card N°2 covering card N°1 as you scroll).
The most similar thing I could find is this example: Layered Scroll Demo - Webflow

So someone explained to me how to achieve this effect, but I think there’s something I did wrong. Is it because of my nav menu/footer? I let you look by yourself, here is my read-only link.

Also, since I want to round the corners of each section to give that card impression, how do I make it so that there is no white on the sides and so that section 2 encroaches a little bit more on section 1?

Thank you for your help :blush: