anchor.diff:                0 1px 0 hsla(0,0%,100%,.05);
   }
   
  -.dropdownToolbarButton {
  +#toolbarViewer .dropdownToolbarButton {
     min-width: 120px;
     max-width: 120px;
     padding: 3px 2px 2px;
  
positive.code:   background: rgba(0,0,0,0); /* Opera does not support 'transparent' <select> background */
  }
  
  .dropdownToolbarButton > select > option {
    background: hsl(0,0%,24%);
  }
  
  
negative.code:   background-position: 5%;
  }
  
  #toolbarViewer .dropdownToolbarButton > select {
    -webkit-appearance: none;
    -moz-appearance: none; /* in the future this might matter, see bugzilla bug #649849 */
    min-width: 140px;
  