Overlapping sections throughout entire page

Hi,

I just started exploring webflow as a possible tool for creating my portfolio. I’ve been trying all day to figure out how to have an effect where all sections (cases) throughout my page will be overlapping.

I watched a tutorial (Unmask Sections While Scrolling in Webflow - YouTube) which got me started with creating the first section, but I can’t seem to do it with the rest of the sections.

Here’s a preview of what I’ve done so far:
https://preview.webflow.com/preview/test-c7e20e?utm_medium=preview_link&utm_source=designer&utm_content=test-c7e20e&preview=b2ff543b243d2dbed93300990873eadc&workflow=preview