<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<!DOCTYPE html>
<html>
<body oncontextmenu="return false;">
<div class="container">
<div class="jumbotron text-center">
<h4>Disable Ctrl + U, Right click, F12, and Ctrl+ Shift + J </h4>
<p>Disable right click, Inspect Element and page source using JavaScript in Html </p>
</div>
</div>
</body>
</html>
