@Massimo, aha! Thanks Annet, this fixes a long standing problem.
Well, Anthony already mentioned the span12, I just provided my solution to the problem. @Dundee In an external style sheet I defined: .pad {padding: 18px;} .pad-hor {padding: 0px 18px;} .pad-vert {padding: 18px 0px;} I use these selectors in the following way: <header class="header mastheader"> <div class="row"> <div class="span12 pad"> </div> <!--/.span12 --> </div> <!-- /.row --> </header> Kind regards, Annet. --