Add support for site-selectors

It would be nice if CSS allowed for selectors to be precisely used depending on where the document came from.

For example,  one may wish to have the selector

.body
{
  Background-color: purple !important;
  Color: white !important;
}

In a user style sheet.  However, the way say Firefox is setup now, this will be applied to every website.  What if I want this applied to say a specific website only and not to every website?  Say www.yahoo.com<http://www.yahoo.com>.

What about:

URL(*.yahoo.com) .body
{
  Background-color: purple !important;
  Color: white !important;
}

Also if I wanted a whole section of the stylesheet to be applied to a specific website:
@ApplyStylesToTheseUrls(*.yahoo.com)

And every selector below that line would apply only to URLs for yahoo.com unless another

@ApplyStylesToTheseUrls(*.google.com)

Were found, then all subsequent selectors would apply only to google.com

This would set things back to applying selectors to all websites.
@ApplyStylesToTheseUrls(*)



Regards,

Andrew Shropshire
AT&T Government Solutions, Inc.
703-506-5708

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