<!DOCTYPE html>
<html>
<body>
<h2>A Nested List</h2>
<p>Lists can be nested (list inside list):</p>
<ul>
<li>Coffee</li>
<li>Tea
<li>Black tea</li>
<li>Green tea</li>
</ul>
</li>
<li>Milk</li>
</body>
</html>