How to extend side borders to bottom of browser?

Is there a way to make the left and right borders of a layout go all the way to the bottom of the browser window even if the content contained within those borders doesn’t extend to the bottom of the page?

I can obviously do this with tables by making the table long enough that it extends beyond the browser’s bottom border, but I don’t want to use tables and doing it that way also adds the scrollbar on the right when it is not necessary.

Hope that makes sense! Thank you for any help!