When I view my site in a browser, at e.g. 1280*1024px screen res. there is no horizontal scroll bar.
When I resize the browser window by making it narrower, the horizontal scroll bar appears way before the width of the browser gets to the edge of the "page" where the black background meets the white page content.
I have stripped a page down to the bare bones. When I remove the drop down menu HTML, the problem goes away.
The problem then is with the CSS / HTML for the drop down menu, but it's pretty complex, and I can't see where the problem lies.
The test page is here:
Any advice much appreciated.