Really cool, seem like it'd make styling responsive pages considerably more easy.
It's interesting that CSS has been moving forward at a rapid pace to make extra tooling (LESS, Sass, etc) increasingly unnecessary, but at least from the layman's point of view (web dev isn't my bread and butter), HTML does not seem to be getting nearly as much attention. Clearly there's a need for more capable HTML as evidenced by the countless Rube Goldberg machines built atop it to make it usable, so why isn't there as much interest in developing it?
It's interesting that CSS has been moving forward at a rapid pace to make extra tooling (LESS, Sass, etc) increasingly unnecessary, but at least from the layman's point of view (web dev isn't my bread and butter), HTML does not seem to be getting nearly as much attention. Clearly there's a need for more capable HTML as evidenced by the countless Rube Goldberg machines built atop it to make it usable, so why isn't there as much interest in developing it?