If I use .container-fluid in Bootstrap 3, does that mean I need to use grid classes?

Question

I\'ve read several of the SO answers to what .container and .container-fluid are, but what I am missing is simple. Do I use column classes like col-xs

Answer 1

Containers exist mostly to 1) limit page width and 2) provide padding for rows. Fluid containers only do the latter. If you aren't using rows, you may not need containers. However, if you're using columns you should be using rows and containers for better, more controllable structure.