One of the strengths of BS is mobile-first responsive design. You can chain classes like this: class-name="col-xs-6 col-md-3" If you try this with the method o

One of the strengths of BS is mobile-first responsive design. You can chain classes like this: class-name="col-xs-6 col-md-3" If you try this with the method outlined by the OP, you'll end up with a giant css file.