<!DOCTYPE html>
<html>
    <head>
        <title>CSS Reference File</title>
    </head>
    <style>
        #green-square {
            position: absolute;
            left: 25px;
            width: 200px;
            height: 200px;
            background-color: green;
            color: green;
        }
    </style>
    <body>
        <p>The test passes if there is a green square and no red.</p>
        <div id="green-square"></div>
    </body>
</html>