<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<link rel="stylesheet" href="css/style.css">
<title>Digital Stopwatch</title>
</head>
<body>
<div>
<h4 id="heading">DIGITAL STOPWATCH</h4>
<h1 id="timer">0:0:0</h1>
<button id="start" onclick="start();">Start</button>
<button id="stop" onclick="stop();">Stop</button>
<button id="reset" onclick="reset();">Reset</button>
</div>
</body>
<script src="js/script.js"></script>
</html>