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