If I understand you, you want to use HTML to make a printable page that fits onto an A$ sized sheet of paper?
If that's the case, then I want to point out that their are easier ways! Using a word processing program like Microsoft Word or OpenOffice's Write will be able to accomplish this without worrying about the idiosyncrasies of HTML.
Using HTML for designing printable graphic layouts is not a good idea. Each computer and web browser will display it in a slightly different way. If you need the graphic to be downloadable by others, I suggest using a word processor to create it, then save it as an image or a PDF (you can download a free PDF maker from here: Bullzip PDF Printer