The whole website is just beautifully done. I found myself mousing over the "What’s New/Features/Pricing/etc." headers repeatedly just because it feels fun! In a world of endless Bootstrap and rampant Corporate Memphis, seeing a lovingly designed bespoke site is so refreshing. Their ad copy is delightful too: “Tired of long waiting times and spinning astrolabes?”
Nit: once the menu is opened the close button is very very slightly smaller than the original hamburger button, so clicking twice without moving the mouse can result in pressing the Home menu item rather than closing the menu.