<!doctype html>
<title>CSS Test Reference</title>
<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
<link rel="author" href="https://www.mozilla.org" title="Mozilla">
<style>
  div {
    width: 100px;
    height: 100px;
    border: 10px solid;
  }
</style>
<div></div>
