<!DOCTYPE html>
<html>
<head>
<title>Keyboard Navigation Example</title>
</head>
<body>
<h4>Use 'Tab' key in your keyboard to navigate through the buttons!</h4>
<button tabindex="1">Button 1</button>
<button tabindex="2">Button 2</button>
<button tabindex="3">Button 3</button>
</body>
</html>