span.ext {
  background: url(extlink.png) right center no-repeat;
  padding-right: 12px;
  zoom: 1;
}
span.mailto {
  background: url(mailto.png) right center no-repeat;
  padding-right: 12px;
  zoom: 1;
}

span.pdf{
  background: url(pdf.png) left center no-repeat;
  padding-left: 20px;
padding-top:2px;
padding-bottom:2px;

  zoom: 1;
}