In simple terms, a responsive web design figures out what resolution of device it's being served on. Flexible grids then size correctly to fit the screen.
The new Bootstrap 3 promises to be a smaller build. The separate Bootstrap base and responsive.css files have now been merged into one. There is no more fixed grid, only fluid.
Have you ever had a project where you thought it would be so much better to just throw everything out and start over? I believe that’s what’s happening with BS3.Quasipickle
Bootstrap 3 scaffolding has changed for improved display on mobile devices
The 2.x icons are now replaced by glyphicons in BS3.
|#||First Name||Last Name||Username|
I'm in Section A.
Howdy, I'm in Section B.
What up girl, this is Section C.