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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>Hoverable Menu</h2>
<p>Move the mouse over the button to open the dropdown content.</p>

<div class="w3-dropdown-hover">
  <button class="w3-btn w3-red">Button</button>
  <div class="w3-dropdown-content w3-border">
    <a href="#">Link 1</a>
    <a href="#">Link 2</a>
    <a href="#">Link 3</a>
  </div>
</div>

</body>
</html>