[animation] Letterhead using a Penguin Grid

My buddy and former collegue P45C4L once showed me the Penguin Grid and I thought it was a very interesting and unusual way to build a grid. Especially compared to the standard "fractions of the page" divisions.

I thought the process was interesting too so I made this little GIF to show how I just built my new letterhead.

The full size page is available as an attachement, with and without the grid (please don't mind the silly placeholder text) to see exactly how it is built.