Footer Widget Area Layout?

I was looking at the demo site for Hueman the other day and noticed the widgets in the footer area. There are three separate widgets that go from left to right.

How do you set up the footer widget area like this? I tried to emulate it, but each widget placed there spans the entire length of the widget. I like how on the demo, each widget has its own area and they can sit side-by-side. Do I need to do something special to set it up like this or am I missing something obvious?

Thanks!