I’ve chucked in another Column element for the scrollable right hand side of the page (empty left hand side column, and for right hand side content that is greater than). I’ve added negative margin to the second column so the content overlaps.

This seems to work well - but I have now gone through your comment and I think I’ve done something a little differently… I think you’re suggesting the scrollable content should be placed within the second column of the first “section” element?

Agency: Saffron