<body style="-webkit-writing-mode:vertical-lr; height:1200px">
<div style="-moz-column-width:300px; -webkit-column-width:300px; -webkit-column-fill:auto; column-width:300px; column-fill:auto; border:2px solid black; width:400px;">
This is some text.<br>
This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>
This is some text.<br>This is some text.<br>This is some text.<br>
<img style="float:left;width:300px;height:250px;background-color:green;display:block">
This is some text.<br>
This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>
This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>
This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>
This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>
This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>This is some text.<br>
This is some text.<br>This is some text.<br>This is some text.<br>