<!DOCTYPE html>
<!-- Any copyright is dedicated to the Public Domain.
   - http://creativecommons.org/publicdomain/zero/1.0/ -->
<html>
  <head>
    <link rel="author" title="Corey Ford" href="mailto:cford@mozilla.com">
    <style>
      body {
        height: 200px;
        margin: 0;
      }
      #sticky {
        position: relative;
        top: 100px;
        height: 10px;
        background-color: black;
      }
      #absolute {
        position: absolute;
        top: 5px;
        left: 5px;
        width: 10px;
        height: 10px;
        background-color: blue;
      }
    </style>
  <body>
    <div id="sticky">
      <div id="absolute"></div>
    </div>
  </body>
</html>