How to create snap horizontal scrolling

Hi guys, I’m a complete newbie and this is my first ever site so I’m not even sure if this is the right question or wording for what I’m trying to do.

I’ve created horizontal scrolling using webflows tutorials. I would like for each “item” or page to snap into frame with one scroll. Exactly like this site

Also, I can only see the first item in the Designer and pressing shift and scrolling doesn’t seem to work so I can see my next item. It only works in preview mode which makes designing each item I little difficult.

If anyone knows a solution, tutorial or even the correct wording so I can look this up, I’d love to hear it!

Thank you,

Here is my public share link: Read-Only Link

Edit The horizontal scroll doesn’t seem to work on my read only link at first. Toggling preview mode off and back on seems to make it work. I’m not sure why that is.