the text in the common pages of my twentyten theme were only two-thirds filled, so i changed the width of the content textarea to 700px. that centered the text perfectly.
unfortunately, now the contact form plugin overlaps the right border. after changing it to 650 the plugin falls within limits of the border, but it looks ugly with this wide textfields. also, the send button looks page-wide.
so i tried to change the width in the form options, but the style.css seems to override, because there is no change.
any tips or suggestions?