I'm really excited about the web version of this. I think Google is doing fantastic work, making material design available to and usable by the community. I'm sure their motives aren't entirely altruistic, but I appreciate them nonetheless.

As a nit, I'm not very fond of their CSS naming conventions, using a lot of double underscores and double dashes. For example:

> <section class="mdc-card__actions mdc-card__actions--vertical">

Seems like this could be cleaned up a bit with something like:

> <section class="mdc-card-actions mdc-card-actions-vertical">

But... this is just a matter of personal taste. I'm sure they have their reasons for the approach they took.