title: Add a tooltip to a div
body: <p>I have a div tag like this:</p>
  
  <pre class="lang-html prettyprint-override"><code>&lt;div&gt;
    &lt;label&gt;Name&lt;/label&gt;
    &lt;input type="text"/&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>How can I displaying a tooltip on <code>:hover</code> of the div, preferably with a fade in/out effect.</p>