TryGhost/Ghost — pull request #4544 by PaulAdamDavis (2014-11-29 12:03:16+00:00)
Title: Allow notifications to sit over the nav bar

Closes #4379

- Adjusts the `.viewport` `z-index` propetty to allow notificatons to sit over the nav bar

Looks like a weird fix, but inheritence of z-index was the issue here.