CSS validation fails, can you help me figuring out what's wrong?

Giganews Newsgroups
Subject: CSS validation fails, can you help me figuring out what's wrong?
Posted by:  Matthias Kaeppler (nospam@digitalraid.com)
Date: Tue, 09 Aug 2005

Hi,

I'm using phpWebSite to build my website and I want it to be standard
conforming. However, the CSS validator always outputs an error:

"Please, validate your XML document first!
The processing instruction target matching "[xX][mM][lL]" is not allowed."

The offending line is:
<?xml version="1.0" encoding="iso-8859-1"?>

The site is built in XHTML, but the HTML validator says it would be
valid XHTML 1.0!

Any ideas?

--
Matthias Kaeppler

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