Take a look at the code snippet in this Fiddle example.
Despite setting overflow-y on the DIV of the orange area, the entire website still scrolls. When the list inside the orange area is shorter, it functions correctly with only a scrollbar appearing on the right side. However, as the inner content grows, the website begins to scroll uncontrollably. How do I prevent this behavior so that only the orange area scrolls regardless of its length?
Currently working with Bootstrap 4.
...please provide code along with links to fiddles...