How to have overflow scrolling within a set boundaries?

Hello! I’m trying to have these over flow frames scrolling horizontally within a set boundaries, however it seems to scroll into the full page. I wanted to know what I should do to make sure that the scrolling only stays in the red lined boundaries?

The scroll behavior for the scrolling frame is position: scroll with parent ; overflow: horizontal. 

The individual frames inside that are scrolling has scroll behavior position: scroll with parent

Thank you!