Absynthe is fixed width with two columns.

Download Absynthe from drupal.org/project/absynthe. This version is 6.x-1.0 from 2009-Mar-18, a 383.47 KB download.

The following HTML has a block level ul element inside a non block level span. You have to change the span to a div.
<span class="tags">Tags: <ul class="links inline">

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