Tryit Editor v2.9

Edit This Code:
<!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 disable the linked document.</p>

<button onclick="myFunction()">Try it</button>

<p id="demo"></p>

<script>
function myFunction() {
    document.getElementById("myLink").disabled = true;
}
</script>

</body>
</html>