TryGhost/Ghost — pull request #3905 by PaulAdamDavis (2014-08-31 20:00:30+00:00)
Title: Fix notification styles

No issue

I'm not sure why, but `@extend`'s here using `%placeholder` selectors, not `.classes`, work.

This fixes the notification and modal styles, which meant changing how the default button selector works. It is now a placeholder, and a real class extends that. The modal styles extended the default button style, which can now happen.