textarea quandry...

Ello...

I have a textarea for user input for which I've (obviously) specified the
cols and rows attributes. The object fills its containing <p> snugly until
the user changes the text size in the browser. Then the textarea object
spills over most horribly.
Is there a way using css to override the cols attribute and set an explicit
width? I've set its width using css, fixed in px, but this doesn't override
the cols attribute when the user increases text size.

P.