I found instructions for how to do this in older versions, but I could find no way to show the built-in stylesheets for Firefox 10. A simple locate *.css | grep -i 'mozilla\|firefox' didn’t reveal anything outside of my profile.
The reason I need this is because in Firefox links without a href attribute are styled like ordinary text, and I’d like them to be styled like links (I’m using DataTables). I’d like to copy all the Firefox styles (and nothing else) for a elements to ensure at least that all a elements (with or without href) look identical in all browsers.
Please note that this is not a bug in DataTables. In HTML4:
Authors may also create an A element that specifies no anchors, i.e.,
that doesn’t specify href, name, or id. Values for these attributes
may be set at a later time through scripts.
In HTML5:
If the a element has an href attribute, then it represents a hyperlink
(a hypertext anchor).
omni.ja/chrome/toolkit/res/html.cssomni.ja is Zip archive inside Firefox installation directory.