1) you are still using embedded styles, this is not valid for most email clients
you should be using inline styles instead.
see this page for more details on the types of CSS (embedded, inline, external):
2) your page is not a fully formatted HTML page.
you have a closing </head> tag> but then no <body> or </body> tag, and no closing </html> tag.
an html page should have the following basic structure:
your page is incorrectly using this basic structure: