<!DOCTYPE HTML>
<style>
#container {
  background-color: blue;
  font-size: 0px;
}
.zero_height {
  display: inline-block;
  overflow: auto;
  border: 100px solid green;
  height: 0px;
  width: 100px;
}
.content {
  width: 100px;
  height: 100px;
}
</style>
<div id=container><div class=zero_height><div class=content></div></div></div>
<pre id=result></pre>
<script>
if (window.testRunner)
  testRunner.dumpAsText();
result.innerText = container.offsetHeight;
</script>