bad page breaks (CSS keep options?)

Hi all,

I've gotten most of my epub file working, except for pages breaking where I don't want them to:

Any code/tips for:

- keeping headers will following paragraph
- keeping short tables from breaking between pages
- top/bottom of page minimums (2 lines)

This particular file was built from the bottom up with good HTML/CSS coding and converted to epub in Calibre (worked great!).
I just need to know what to change to improve appearance and functionality as an ebook.

Thanks!