<style type="text/css" >
non valida sta riga

questo il commento del w3c:
Line 12, column 6: required attribute "type" not specified

<style>

The attribute given above is required for an element that you've used, but you have omitted it. For instance, in most HTML and XHTML document types the "type" attribute is required on the "script" element and the "alt" attribute is required for the "img" element.

Typical values for type are type="text/css" for <style> and type="text/javascript" for <script>.
la pagina è online qui

che fare ?
tnx
paolo