@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");

toolbarbutton {
  list-style-image: url("../images/translate.png") !important;
}

toolbarbutton .toolbarbutton-menubutton-button {
  min-width: 16px !important;
}

toolbarbutton image {
  margin: 0;
}

toolbarbutton .toolbarbutton-text {
  display: none;
}