I use a .pagebreak class that puts a page break before stuff.

Then I tell it not to break sections and articles unnecessarily , and let the browser figure it out .

Not a fan of embedding specific sizes into the CSS, I often(Well, not really often as I'm only printing a few times a year) like to print A5.

A4 makes it annoying to try to hold a binder in one hand and takes more space than it really needs to.