twitter/bootstrap — pull request #1471 by reefdog (2012-01-31 21:58:01+00:00)
Title: Limit .span* columns within .row-fluid by child selector

Apply a `>` child selector to the `.span*` definitions within
`.row-fluid`.

Fixes the problem where `.span*`-classed elements deep within a
`.row-fluid` element get unexpected sizing.

Affects #1469