Horizontal Scroll Interaction on a -100vh div


I’m trying to make a gallery with a horizontal scroll interaction on a -100vh transformed div (the page has already a horizontal scroll with a section and on the 2nd section of the page there are some buttons, if you can see on the preview i want to make the button 4 when clicked like when you click the button 1 but with a gallery of images), i tried to do one but it’s not working.
Does anyone know how to do this?

Many thanks, i’m new to webflow and trying to learn still.

Here is my public share link: Webflow - Website Test Layout