<!DOCTYPE HTML>
<html>
<body>
<p>The test passes if you see a green square.</p>
<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="200px" height="200px">
<g style="isolation: isolate">
<rect x="0" y="0" width="200" height="200" style="fill: green; mix-blend-mode: difference;"/>
</g>
</svg>
</body>
</html>