title: Ignore Parent Elements Margin
body: <p>I am trying to span an image the width of a parent element, however the parent element has a <code>margin: 10px;</code> This means when I set</p>
  
  <pre><code>#parent img {
      position: absolute;
      top:0;
      left:0;
      height: auto;
      width: 100%
  }
  </code></pre>
  
  <p>This only stretches the image to the width of the parent... minus 10px on either side. How can I set the image to the FULL width of the parent, ignoring the margin?</p>