<!DOCTYPE html>
<html>
<head>
    <style type="text/css">
       div {
           width: 100px;
           height: 100px;
           background-color: green;
       }
    </style>
</head>
<body>
    <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
    <div></div>
    <div></div>
    <div></div>
</body>
</html>