Wrap text in Div table cell

I'm trying to put some "help text" into a DIV table on a form and want the text within the DIV table "cells" to wrap. According to all the CSS suggestions I can find I should be able to do it just by putting a "style=word-wrap: break-word;" or in fact it should be standard for normal sentences (ie not extremely long words) to just wrap within the cell anyway. I have not been able to get it to do this. The text overhangs the cell to the right when I constrain the DIV table and no placement of "style=word-wrap: break-word;" at any level stops it from doing this. Any assistance in remedying this appreciated. Cheers, Brian.