<!doctype html>
<title>CSS Test Reference</title>
<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
<style>
  div {
    position: absolute;
    top: 10px;
    left: 10px;
    background: green;
    width: 100px;
    height: 100px;
  }
</style>
<div></div>
