First, my mistake: at first, I thought you had linked a different site. Not sure why; must have been an "operator error". My apologies.

Turns out that "clear:both;" from that tutorial is likely just what I am looking for. That's an informative, well-written piece. Thank you.

Any additional advice on dividing a individual div into "cells" to similate a table layout, without affecting the layout of the entire document? I assume there's some "float" and "clear" technique involved, but when I've tried this, I couldn't reproduce the effect I wanted without affecting other floats outside that particular div and destroying the overall page layout.