title: getComputedStyle reporting different heights between Chrome/Safari/Firefox and IE11
body: <p>This has been driving me a little batty all day and I haven't been able to find where anyone else has documented this discrepancy.</p>
  
  <pre><code>window.getComputedStyle(el).height
  </code></pre>
  
  <p>See <a href="http://jsfiddle.net/ZwF9H/6/">http://jsfiddle.net/ZwF9H/6/</a> for the demo.</p>
  
  <p>What I am expecting is that window.getComputedStyle() should return the same computed height value between all browsers. Internet Explorer 11 is doing something different. (Actually, IE 9 and 10 are as well, but IE 11 was the first one I could get the dev tools to work in.)</p>
  
  <p>For all other browsers, the computed height is the height set in the css whether it be in the stylesheet or inline on the textarea element.</p>
  
  <p>IE11 is ignoring the box-sizing: border-box declaration and subtracts the padding and margin, which I think is incorrect. </p>
  
  <p>Is this a bug, am I doing something wrong, is it a know fact that IE11 returns computed values differently?</p>