It seemed a good idea at the time to define a width for the <p> element:

#content p { width: 450px; }

But now after building 80 pages into my CMS, I need <p> to act like normal with no width on certain pages.

#content .myclass p { width: "not-set"; }

auto doesn't work, 100% doesn't work. I've considered a javascript solution that messes with class names, but would prefer a css rescue of seven or eight characters!