First short pointer today: position:center;
in CSS3!
Second short pointer: www. is deprecated. and for a reason. Add this to your .htaccess file and you will be fine (don't forget to change the domain):
RewriteEngine On RewriteCond %{HTTP_HOST} ^www.domain.com$ [NC] RewriteRule ^(.*)$ http://domain.com/$1 [R=301,L]