I myself generated the attached css by inserting the less code in the .row-fluid brackets.
But I discovered that the Bootstrap 2.1 will include those offsets, so you can check directly here : github 2.1.0-wip/less/mixins.less#L599<https://github.com/twitter/bootstrap/blob/2.1.0-wip/less/mixins.less#L599> I don't know if there are changes that would break v2.0, but you can at least see what I meant if not use the whole file. Enjoy.
