title: Force vertical div to full container height
body: <p>I know it's shaky to get a full screen height div without using client-side scripting, but what about this: assuming my div is tall enough to reach the bottom, how do I make it reach the VERY top and bottom, without the little extra space at top and bottom? I've tried adding top and bottom margins (and even padding) of 0px, but it doesn't seem to work.</p>
  
  <pre class="lang-css prettyprint-override"><code>#container {
      height: 1000px;
      width: 800px;
      margin: 0 auto;
      padding-left: 10px;
      padding-right: 10px;
      overflow: hidden;
      background-color: #FFF;
      box-shadow: 0 0 10px rgba(0, 0, 0, 1);
  }
  </code></pre>