[data-tooltip] {
  cursor: help;
}
.tooltip-bubble {
  position: fixed;
  max-width: 200px;
  padding: 8px 10px;
  border-radius: 6px;
  background-color: #333;
  color: white;
  font-size: 0.8em;
  font-weight: normal;
  line-height: 1.4;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.15s ease;
  z-index: 100000;
}
.tooltip-bubble-visible {
  opacity: 1;
  visibility: visible;
}