Responsive Foundation 6.0.0

A base z-index to use for the primary navigation. By default, this sets a z-index which will put dropdown menus above content, but below overlays.

Use this variable alone to set a default z-index which will play nicely with other types of interactive content on your site. Use + or - with it to set a z-index relative to the primary navigation. Change this variable to change the stacking order of the primary navigation.