div.alphabet {
  position: relative;
  display: table;
  width: 100%;
  margin-bottom: 1em;
}
div.alphabet span {
  display: table-cell;
  color: #3174c7;
  cursor: pointer;
  text-align: center;
}
div.alphabet span:hover {
  text-decoration: underline;
}
div.alphabet span.active {
  color: black;
}
div.alphabet span.empty {
  color: red;
}

div.alphabetInfo {
  display: block;
  position: absolute;
  background-color: #111;
  border-radius: 3px;
  color: white;
  top: 2em;
  height: 1.8em;
  padding-top: 0.4em;
  text-align: center;
  z-index: 1;
}