This is very cool! Like the author, I'm pretty impressed that just CSS can get you this far.
I'm very excited to see the <scribe-music> custom element too! I had an intern work on wrapping VexFlow with web components a few years back, but the summer ended before everything was finished, and it hasn't been maintained: https://github.com/PolymerLabs/vexflow-elements/blob/web-com...
A maintained and easy-to-use library could do a lot of good for music notation on the web.
I'm very excited to see the <scribe-music> custom element too! I had an intern work on wrapping VexFlow with web components a few years back, but the summer ended before everything was finished, and it hasn't been maintained: https://github.com/PolymerLabs/vexflow-elements/blob/web-com...
A maintained and easy-to-use library could do a lot of good for music notation on the web.