Nicholas C. Zakas:
So don’t believe people when they tell you that hover doesn’t exist on touch devices. At least on iOS, hover does exist and needs to be planned for accordingly. If you are using a :hover rule to show something in your interface, you may want to hide that rule when serving your page to a touch device. It might be a good idea to just completely remove all :hover rules for any experience that’s going to be served to a touch device. The touch-based world doesn’t need hover, so be careful not to inject it accidentally.