Drupal modules - both core and contributed - wrap a high percentage of unordered lists in the "item-list" class. If your lists aren't behaving as your css suggests, view source in your browser to find out whether the list you're trying to style is, in fact, an item list

One of the challenges that faces any site designer involves using the UL tag to its best advantage. In drupal the challenge is complicated by the frequent appearance of several classes which are pre-styled by drupal.

Drupal allows modules to output 'help' messages to the page.

To display 'help', a theme usually includes a line like this somewhere in the page.tpl.php file:

The diligent themer, wishing to provide helpful visual cues for helpful help text, may be tempted to wrap this in a div of some sort. However, this isn't necessary: $help comes pre-wrapped in a div with the class attribute 'help'.