.tooltip {
  position: relative;
  display: inline-block;
}
.tooltip img {
  opacity: 0.5;
  cursor: pointer;
}
.tooltip__text {
  visibility: hidden;
  width: 172px;
  background-color: #fff;
  border: solid 1px #cccccc;
  color: #666666;
  text-align: center;
  padding: 10px;
  border-radius: 3px;
  /* Position the tooltip text */
  position: absolute;
  z-index: 1;
  bottom: 125%;
  left: 50%;
  margin-left: -97px;
  margin-bottom: 10px;
  /* Fade in tooltip */
  opacity: 0;
  -moz-transition: opacity .5s;
  -webkit-transition: opacity .5s;
  transition: opacity .5s;
}
.tooltip__text:after,
.tooltip__text:before {
  top: 100%;
  left: 50%;
  border: solid transparent;
  content: " ";
  height: 0;
  width: 0;
  position: absolute;
  pointer-events: none;
}
.tooltip__text:after {
  border-color: rgba(255, 255, 255, 0);
  border-top-color: #fff;
  border-width: 10px;
  margin-left: -10px;
}
.tooltip__text:before {
  border-color: rgba(204, 204, 204, 0);
  border-top-color: #cccccc;
  border-width: 11px;
  margin-left: -11px;
}
.visible-tooltip .tooltip__icon,
.visible-tooltip .tooltip__text {
  visibility: visible;
  opacity: 1;
}