.cert_field {

  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  margin-left:20px;
  margin-right: 20px;
  height: 140px;
  *height: 136px;
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  font-size:100px;
  text-align: center;
  font-weight: 900;
}
