@namespace url(http://www.w3.org/1999/xhtml);

@-moz-document domain(mail.google.com) {
.ct {-moz-border-radius: 8px !important; background: #44f !important; padding: 2px 4px 2px 4px !important; color: #fff !important;font-weight: bold !important;
font-family: verdana; font-size: 8pt !important;}

#tb span.ct:empty
{
display:none!important;
}

}