#27993
The width of the nesting DIV is not sufficient for 2 columns.
I changed the width from 612 to 624 and it produced a 2 columns layout.
[language=css:2p1m9ped]#clientBrowserMainEntity {
float:left;
width:624px;
margin: 0 0 10px 5px; }[/language:2p1m9ped]
