<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<style>
li:before {
content: "List item";
}
p:after {
content: " with string value.";
}
</style>
</head>
<body>
<h2>Content property example</h2>
<ul>
<li>1</li>
<li>2</li>
<li>3</li>
</ul>
<p>Here is some paragraph</p>
</body>
</html>