a.tooltip span {
  display: none;
}

a.tooltip:hover {
  text-decoration: none;
  padding: 0;
  cursor: help;
}

/* hack chrome/safari */
@media screen and (-webkit-min-device-pixel-ratio:0) {
  a.tooltip {
    padding-right: 3px;
  }
}

a.tooltip:hover span{
  display: inline;
  position: absolute;
  border: 1px solid #cccccc;
  background: #ffffff;
  color: #000;
  text-align: left;
  padding: 2px 3px;
  margin-left: 10px;
  width: 150px;
  white-space: normal;
  text-transform: none;
  font-weight: normal;
}