mail app html signature

I have created a html signature for the mail app. When I open the signature in a web browser the links for the e-mail and website work. When I open it in my mail app it does not even show that there are links attached to the e-mail and web address.

Here is an image of the signature

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Here is a capture of the HTML code

I followed this tutorial to upload the code to the mail app

http://matt.coneybeare.me/how-to-make-and-html-signature-in-apple-mail/

Any advise would be appreciated.