<!DOCTYPE html> <meta charset="utf-8"> <title>Test reference</title> <link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/"> <style> div { margin-left: 60px; background: green; width: 40px; height: 40px; } </style> <p>Test passes if there is a filled green square and <strong>no red</strong>.</p> <div></div>