These are safari specific css tags.
From qooxdoo.org:
Most browser support custom CSS tags, which are not (yet) part of any standard. These styles are usually prefixed with the browser name. Mozilla uses -moz-, Opera -o- and Safari/WebKit uses -webkit- as prefix. I found more info on the following site: http://qooxdoo.org/documentation/general/webkit_css_styles ________________________________ From: support-bounces@drupal.org [mailto:support-bounces@drupal.org] On Behalf Of tony maciejowski Sent: Monday, June 20, 2011 9:13 PM To: support@drupal.org Subject: [support] drupal CSS question Dear All, I am trying to figure out where -webkit-margin * comes from in the Genesis theme: ul, menu, dir { 1. display: block; 2. list-style-type: disc; 3. -webkit-margin-before: 1em; 4. -webkit-margin-after: 1em; 5. -webkit-margin-start: 0px; 6. -webkit-margin-end: 0px; 7. -webkit-padding-start: 40px; } Did search of everything with no luck. thanks -- tony maciejowski