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

@-moz-document domain("mail.google.com") {
 div.xT{
  width:100% !important;
 }
 div.yi{
  float:right !important;
  margin-left:3px;
 }
 /* to reverse the order of multiple labels */
 div.yi div.ar{
  float:right !important;
 }
}