title: CSS: fixed to bottom and centered
body: <p>I need my footer to be fixed to the bottom of the page and to center it. The contents of the footer may change at all time so I can't just center it via margin-left: xxpx; margin-right: xxpx;</p>
  
  <p>The problem is that for some reason this doesn't work:</p>
  
  <pre><code>#whatever {
    position: fixed;
    bottom: 0px;
    margin-right: auto;
    margin-left: auto;
  }
  </code></pre>
  
  <p>I crawled the web and found nothing. I tried making a container div and nada. I tried other combinations and gurnisht. How can I make this happen?</p>
  
  <p>Thanks</p>