Channel Nine has four columns, no header, and is XHTML 1.0 Strict.

Download Channel Nine at drupal.org/project/channel_nine. This version is 6.x-1.2 from 2008-Jan-31, a 97.16 KB download.

W3C and TV agree this theme is XHTML 1.0 Strict and it validates as CSS 2.1 and CSS 3.

Wave did not detect accessibility errors. Cynthia Says it is US 508 and WAI as far as a computer can check. TV agrees the theme is US 508.

This theme passes WCAG (WAI) level A then fails level AA due to improperly nested headings. The first heading is the following h2. This could be changed to a span to take it out of the heading levels.
<h2 class="title">User login</h2>

The next heading is a good choice for the level 1 heading.
<h1 class='site-name'><a href="/" title="Home">D theme for da Web</a></h1>

There is a second heading at level one and this should be a h2 or a div.
<h1 class="title">Channel Nine</h1>