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<!DOCTYPE html>
<html>
<title>W3.CSS</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="../lib/w3.css">
<body class="w3-container">

<h2>Image as a Tooltip</h2>
<h2>Hover Over the Picture!</h2>

<div class="w3-tooltip">

<img src="img_car.jpg" alt="Car" style="width:100%">

<p class="w3-text">
A car is a wheeled, self-powered motor vehicle used for transportation.
Most definitions of the term specify that cars typically have four wheels.(Wikipedia)
</p>

</div>

</body>
</html>