<!DOCTYPE html>
<html>
<head>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js">
</script>
<script type="text/javascript" language="javascript">
$(document).ready(function() {
$("h1").css("color", "red");
});
</script>
</head>
<body>
<h1>This is first paragraph.</h1>
<p>This is second paragraph.</p>
<p>This is third paragraph.</p>
</body>
</html>