body {
  background-color:#CCC;
}

#tooltip {
  display: none;
  position: absolute;
  text-align: center;
  color: white;
  padding: 8px;
  margin-top: 16px;
  margin-left: 16px;
  font: 13px sans-serif;
  font-weight: 100;
  background: #333;
  border-radius: 4px;
  pointer-events: none;
  -moz-box-shadow: 4px  4px  4px #000000;
  -webkit-box-shadow: 4px  4px  4px #000000;
  box-shadow: 4px  4px  4px #000;
}