part of your CSS is referring to a wrong selector (div#wrapper). FYI the single dot is for classname-selector HTML attributes and # hash is for id selector.
try change .wrapper to #wrapper & set the wrapper width to 904px (692 + 212)
My problem when doing this is that the two headers which are also contained in the wrapper shrink to the width of the wrapper when I want them to continue to the edges of the page and only the Content and Sidebar div’s to be restricted to 904px.
