Oh, wow, that's one naive print.css

Missing things like resizing media to not occupy everything, blocking certain elements from getting broken up, and so on, wrap when needed, printing links (sic), etc

The latter is why I moved links into footnotes instead of inline linking - also to prevent breaking up the reading flow.

Also: adding page counters is virtually impossible.

Anyhow, I do think it's a good idea, but mostly for archival reasons: if you really want an archival copy, you'll need to print it.