Resolution: Not a bug
Affects Version/s: 2.0
Fix Version/s: None
Component/s: Forms Library
I come from a Drupal background, and Drupal makes extensive use of <div> ids and classes. Here's an example from a block in the right sidebar of our school's website (http://www.grundschule-heidhorst.de):
<div id="block-block-5" class="block block-block region-odd even region-count-1 count-4">
<div class="block-inner"> ...
Drupal's Zen theme does a great job of providing a very flexible and purely CSS based theme (http://drupal.org/project/zen).
Following the discussion in http://moodle.org/mod/forum/discuss.php?d=113885 I would suggest such an enhancement as a general design concept for Moodle. That would make changing the layout of your Moodle site much easier, just using CSS without the need of modifying HTML or even PHP code.