[tip] .tooltip {
  position: fixed;
  font-size: 16px;
  line-height: 20px;
  padding: 5px;
  background: #444;
  border: 1px solid #222;
  visibility: hidden;
  opacity: 0;
  box-shadow: -2px 2px 5px rgba(0, 0, 0, 0.2);
  transition: opacity 0.3s, visibility 0s;
  color: white;
  min-width: 200px;
}

[tip]:hover .tooltip {
  visibility: visible;
  opacity: 1;
}