Yes, that is exactly what that means. A little further down, there's examples: http://getbootstrap.com/css/#grid http://getbootstrap.com/css/#grid They sugges

Yes, that is exactly what that means. A little further down, there's examples: http://getbootstrap.com/css/#grid http://getbootstrap.com/css/#grid They suggest that it doesn't end up awfully complicated. I could see how you could use it to make something complicated, but it seems to me that if you use it sparingly at the top-most level of markup, it shouldn't be too bad.