<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("button").click(function(){
$("p.intro").hide();
});
});
</script>
</head>
<body>
<h2 class="intro">This is a heading</h2>
<p class="intro">This is a paragraph.</p>
<p>This is another paragraph.</p>
<button>Click me</button>
</body>
</html>