Below screencast shows how we can create a layout in Oxygen that has a fixed left sidebar and a scrolling content div on the right.
We shall add a logo and menu in the left sidebar and dynamic title and content in the right.
Parent Columns Div
box-shadow: 5px 0 25px 0 rgba(0, 0, 0, 0.15)
overflow: scroll (or auto)
Stack items vertically from 1120px and below
Stack child elements horizontally; space-between
If this method does not work for you as expected for whatever reason, try adding these: