navbar-fixed-top breaks when using responsive css

Created by: ejain

When using navbar-fixed-top a padding-top has to be set on the body. But when using bootstrap responsive and reducing he width of the window, the navbar switches into a non-fixed vertical layout. Because the padding-top is still set, there is now a gap above the navbar...

This behavior can be seen e.g. in the example at http://twitter.github.com/bootstrap/examples/starter-template.html.