<!DOCTYPE html>
<html>
    <head>
        <title>Adjacent column spanners</title>
    </head>
    <body>
        <p>You should see the word 'PASS' twice below, and no red:</p>
        <div style="-webkit-columns:2; columns:2; -webkit-column-gap:0; column-gap:0; width:400px">
            <div style="background:red;">
                <div style="-webkit-column-span:all; column-span:all;border:1px solid black">PASS<br>&nbsp;</div>
                <div style="-webkit-column-span:all; column-span:all;border:1px solid black">PASS<br>&nbsp;</div>
            </div>
           
        </div>
    </body>
</html>