<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<style>
p:only-of-type {
background: #1c87c9;
}
</style>
</head>
<body>
<h2>:only-of-type selector example</h2>
<div>
<p>Lorem ipsum is simply dummy text.</p>
</div>
<div>
<p>Lorem ipsum is simply dummy text.</p>
<p>Lorem ipsum is simply dummy text.</p>
</div>
</body>
</html>