Question

I have a div with 100% width, which fills the screen (horz) fine, but when I manually resize the browser window (horizontally) until it hits my fixed width wrapper (so scrollbar appears) and then scroll to the right the 100% width div does not fit 100% any more. Probably sounds more complicated than it is.

Example here : link

Answer 1

Set the min-width of the page body to the same width as your fixed width wrapper, for example:

body {
    min-width: 900px;
}

See this example: http://jsfiddle.net/XLHqN/