CHOCOTheme is a popular theme from Wordpress with div based, fixed width, two column layout (content+right sidebar). The original wordpress theme was created by cssmayo. The drupal port was developed by Zyxware Technologies.
The theme has been tested in Firefox 14.0, Google Chrome 21.0, Chromium 18.0 (all in Ubuntu). The theme is fully XHTML 1.0 and CSS 2.0 compliant. Let us know the compatibilities in other browsers and we can update the list here. You can report all issues related to the theme here at the issue queue and we will take it upstream with the original theme developer.