<!doctype html>
<meta charset="utf-8">
<title>CSS Test Reference</title>
<style>
  #target {
    width: 100px;
    height: 100px;
    background: red;
    /* For this simple case, hidden and clip are equivalent */
    overflow: hidden;
  }

  #container {
    overflow: auto;
    height: 300px;
  }

  #fill {
    background: blue;
    height: 5000px;
  }
</style>
<div id="container">
  <div id="target">
    <div id="fill"></div>
  </div>
</div>