الگو:پیوند با میان‌ویکی/آزمایشی/styles.css

.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip .tooltiptext {
  visibility: hidden;
  width: 30px;
  height:20px;
  background-color: #dde5f0;
  color: black;
  text-align: center;
  border-radius: 6px;
  position: absolute;
  z-index: 1;
  top: 19px;
  right:50%;
  margin-right: -15px;
  
  /* Fade in tooltip - takes 1 second to go from 0% to 100% opac: */
  opacity: 0;
  transition: opacity 1s;
}
.tooltip .tooltiptext::after {
  content: "";
  position: absolute;
  bottom: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: transparent transparent #dde5f0 transparent;
}
.tooltip:hover .tooltiptext {
  visibility: visible;
  opacity: 1;
}