Streaming HTML out of order without JavaScript

I was convinced Firefox didn't support rendering partial HTML at all, but it turns out it just waits for two separate chunks to arrive before rendering. Queer.

Can't find any documentation on this online.

This is a great new way to think about progressive enhancement! It's really cool to see Shadow DOM and streaming HTML work together so well.

This is great. Finally I can render the footer first without having to load jquery first first.