Do you mean https://www.bbt.com/ ? Is it an ordinary web page or a PDF? Firefox has a number of print bugs where certain tags or style rules stick together and do not break across pages properly (the content just runs off the bottom of the page. We often can suggest a little hack to work around the individual case, but there's no general solution as far as I know. If you want to give a specific URL (no login required), I could take a look.