A CodePen by Adrian Redman. Simpler vertically centered text for a menu - Just a simplified example of the original that's going to be easier to use for menus.
The perks of this method include: 
* resizing text does not affect layout, it all just scales
* text stays aligned vertically and horizontally in each box
* add or remove links and it all just reflows
* style it however you like! 
(check the forkline for other versions)