CSS Schema

@rule head {
    title {
        assert:  "Page does not have a title.";
    }
    link[rel="stylesheet"][type="text/css"][href="std.css"] {
        assert:  "Page does not use the standard stylesheet.";
    }
    style {
        report:  "Page uses inline style rather than linking.";
    }
}
@rule body {
    :scope.std-body {
        assert:   "Page does not use the standard body class.";
    }
    :scope > div.std-top {
        assert:   "Page does not start with the required page top component.";
    }
}