<!DOCTYPE html>
<title>CSS Reference</title>
<link rel="author" title="Sergio Villar Senin" href="mailto:svillar@igalia.com" />
<style>
div {
  background-color: green;
  height: 50px;
  width: 100px;
}
span {
  display: inline-block;
  background-color: green;
  height: 50px;
  width: 40px;
}
br { margin: 50px; }
</style>

<p>Test passes if there is <strong>no red</strong> visible on the page.</p>
<div></div>

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<span></span>