RE: Width of an absolute positioned element

Hi,
 
> > Yes, my document is valid. It uses XHTML 1.1 DOCTYPE.
> 
> That's not supported by the majority of installed browsers.  Did you
> server it with the correct media type (*NOT* text/html)?

I also tried XHTML 1.0 Strict. I serve the xhtml pages with
"application/xhtml+xml" media type. Mozilla shows me, that its in standards
compliance mode. I also tried "text/html". Mozilla is still in standards
compliance mode. 
But neither setting changed the rendering in the browsers.

Christoph