html - Bootstrap Grid, do I need a container?

Question

I've been playing with bootstrap 3 and I noticed that if you use the Grid System without a container it becomes fluid, someone told me I shouldn't do that because the system was design to be within a container. What happens if I don't use the container class?, do I need it?, if so could I make the container class width 100% without messing up bootstrap's media-queries, or is there any other or better way to build a fluid layout with bootstrap 3.

Answer 1

Update Bootstrap 4

Outermost rows should also be wrapping in container or container-fluid in Bootstrap 4 to prevent horizontal scolling caused by negative margins on the .row.

Bootstrap 3

You should wrap row in container or you'll have a problem with the negative margins that BS 3 uses for the row element. Basically the row is designed to be within a container. Read more on the Bootstrap grid

Play with this example on Bootply: http://bootply.com/83751