In this article, you will learn How to Create Tooltip using CSS.

Example:-

<html>
<head>
<title>Tooltip using CSS</title>
<style>
.tooltip {
  position: relative;
  display: inline-block;
  border-bottom: 1px dotted black;
}
.tooltip .tooltiptext {
  visibility: hidden;
  width: 120px;
  background-color: black;
  color: #fff;
  text-align: center;
  border-radius: 6px;
  padding: 5px 0;
  position: absolute;
  z-index: 1;
  bottom: 100%;
  left: 50%;
  margin-left: -60px;
  opacity: 0;
  transition: opacity 1s;
}
.tooltip:hover .tooltiptext {
  visibility: visible;
  opacity: 1;
}
</style>
</head>
<body style="text-align:center;">
<h2>Tooltip on Hover</h2>
<p>When move the mouse over the text, the tooltip text will fade in.</p>
<div class="tooltip">Hover over me
  <span class="tooltiptext">Tooltip text here</span>
</div>
</body>
</html>