[bawolff]

I would think the best option would still be to have the css in a separate file unless your css is very small. It is of course a tradeoff between if the extra RTT hurts you more than the extra bytes in your page (how much that matters depends on how big your page is and tcp window sizes), and how often your users are viewing your website totally uncached.

Keep in mind, that even without server push http/2 still fixes head of line blocking which was a major reason that the folk wisdom of inlining things and using sprites popped up in the first place.