<!DOCTYPE HTML>
<html>
    <body>
        <p>The test passes if you see an yellow square inside a green one.</p>
        <svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="400px" height="400px" style="background: lime">
            <rect x="100" y="100" width="200" height="200" style="fill: red; mix-blend-mode: difference"/>
        </svg>
    </body>
</html>