<body style="-webkit-writing-mode: vertical-lr">
<p style="-webkit-column-count:3; -webkit-column-rule:3px solid black; -webkit-column-fill:auto; column-count:3; column-rule:3px solid black; column-fill:auto; width:100px;border:10px solid maroon; padding:20px;">
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
</p>

<p style="-webkit-column-count:3; -webkit-column-rule:3px solid black; -webkit-column-fill:auto; column-count:3; column-rule:3px solid black; column-fill:auto; width:100px;border:10px solid maroon; padding:20px; direction:rtl">
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
This is some column text.<br>
</p>