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

@-moz-document domain("mail.google.com") {

a[title^="Buzz ("]
{ 
  visibility: hidden !important; 
}
 
a[title^="Buzz ("]:before
{ 
  content: "Buzz"; 
  visibility: visible; 
  font-weight: normal; 
  text-decoration: underline;
}

.igqjf
{
  margin-left: -55px !important;
}

}