title: Div inside button element ignores CSS margin-top setting
body: <p>I'm looking to create a "sliding door" effect using a <code>button</code> tag (because it's for a form's submit button), but it's not working. Check this fiddle: <a href="http://jsfiddle.net/gf8bV/14/" rel="nofollow">http://jsfiddle.net/gf8bV/14/</a></p>
  
  <p>In the fiddle you see that, with the <strong>same code</strong>, it works for the div but not for the button. Why is that? Any solution?</p>