title: font-size different in -webkit and -moz browsers
body: <p>Check this <a href="http://jsfiddle.net/8ubbW/15/embedded/result/" rel="nofollow">jsfiddle</a></p>
  
  <p>Why is there a difference in size of the datepicker when <code>font-size</code> is set to <code>1.5em</code>?
  The amount of em's is not important I have tryd different font-sizes and I still get the same problem. The red box is set to 460px and is there for you to see the difference in size of the datepicker in firefox and chrome/safari.</p>
  
  <p>Edit: I have already try'd using px insted of em</p>