Good stuff! I knew the calc() trick with vw due to an article on Smashing Magazine and use it wherever I can, but I was never really sure what vmin and vmax does, so now I know :)

These font units are really interesting, so thank you for the article that helps to apprehend their uses.

There is a much easier way to do fluid layouts that maintain aspect ratio with this technique. Put a font size of 1vw on the html tag. Use rems for every unit throughout the rest of your page. You can even easily write a px 2 rem mixin to help you calc from pixels.