If you tell me which section you want to make scroll I can tell you what the outer/inner element names well be c:
Some panels, like the wishlist on v2 profiles, don't take hidden scrollbars well.
Just a note that you don't need a height (and actually probably shouldn't use one) on the outer element, since it will wrap to fit the inner element and it will be one less thing for her to type in. You don't usually need a width on the outer element, and in most cases the width of the inner element can just be 100%. So you really only have to set a height for the inner element and you'll be done.