<!DOCTYPE html>
<html>
    <head>
        <title>Turn spanner between column rows into regular block</title>
    </head>
    <body>
        <p>You should see the word 'PASS' below:</p>
        <div style="float:left;">
            <div style="-webkit-columns:4; columns:4; column-gap:0; -webkit-column-gap:0; orphans:1; widows:1;">
                P
                <div>A</div>
                S<br>S
            </div>
        </div>
    </body>
</html>