a.info {
  position: relative;
  z-index: 30;
  background-color: silver;
  color: #660000;
  text-decoration: none;
  font-family: Arial,Helvetica,sans-serif;
}
a.info:hover {
  z-index: 25;
  background-color: #cccccc;
  color: black;
  text-decoration: none;
}
a.info span {
  display: none;
  background-color: white;
  text-decoration: none;
}
a.info:hover span {
  border: 1px solid #333333;
  padding: 15px;
  display: block;
  position: absolute;
  top: 30px;
  left: 30px;
  width: 25em;
  background-color: white;
  color: black;
  text-align: left;
  font-family: Arial,Helvetica,sans-serif;
text-decoration: none;
}