Other contributors have said "How do you add html to your website?" is the same question as "What is a website HTML code?" If you believe that these are not asking the same thing and should be answered differently, click here
<code><a href="http://yoururl.com/yoururl/"><img src="http://imgurlhere.com/here.jpg"></a></code> (If code tags are visible in this post, DO NOT insert them)