<!DOCTYPE html>
<html>
<head>
<link id="myLink" rel="stylesheet" type="text/css" href="styles.css">
</head>
<body>
<h1>I am formatted with a linked style sheet</h1>
<p>Click the button to change the value of the href attribute of the linked document. This will change the style sheet.</p>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
document.getElementById("myLink").href = "style2.css";
}
</script>
</body>
</html>