Pangil

I'm fairly new to GSAP and I'm trying to have images slide in from the bottom as the new section appears as well. I am having issues with getting that to work and I'm not sure how to hide the images that are sliding in from the bottom. I have placed overflow: hidden which doesn't seem to work. I'm trying to somewhat replicate what this website did with their images as you scroll through their sections https://www.le-commandant-charcot.com/en#scientific-odyssey