<!DOCTYPE html>
<html>
    <body style="color:black; background:white;">
        <p>Below you should see the word 'PASS' on a lime background.</p>
        <div style="width:20em; height:20em; -webkit-writing-mode:horizontal-bt; line-height:2em;">
            <div style="background:black;"><br></div>
            <div style="background:lime;">PASS</div>
        </div>
    </body>
</html>