Cool, but note that the rendering is ultra mega slow. Even if you get the "compilation" process to be faster, browsers are really slow when it comes to box-shadow. If you upload an image, then scroll to the bottom and back to the top, Chrome takes like 6s to re-paint the page.
Yup. That's just a virtual DOM to enable the library on the server-side, but it's not used client-side. On the server, it just means that you're able to walk a DOM tree.