Quite a few years ago, L. David Baron implemented site-specific functionality for CSS in the Gecko engine. This is still implemented with the browser-specific @-moz-document declaration. I would like to fine-tune my stylesheet for the Webkit browser(s) that I use because it's difficult to have one stylesheet for a myriad of webpages. Details are at http://www.w3.org/TR/css3-conditional/#at-document Regards
*** This bug has been marked as a duplicate of bug 51172 ***