title: HTML email - TD hover to change back background-color not working
body: <p>My codepen:
  <a href="http://codepen.io/leongaban/pen/iJBrn" rel="nofollow">http://codepen.io/leongaban/pen/iJBrn</a></p>
  
  <p>Note this isn't for a regular webpage, I'm building an HTML email, however for modern browsers / email clients it would be nice to have a simple rollover color (no javascript). Not sure why my hover isn't work.</p>
  
  <p>I'm using code found from the other TD hover stackoverflow questions I've found so far.</p>
  
  <pre><code>td.blue-button:hover {
          background-color: #267aa6;
  }
  </code></pre>
  
  <p>How would you create this?</p>