9. Unordered lists<-ul>
10. Lists inside a list
<!DOCTYPE html>
<html>
<head>
<title>Nested lists</title>
</head>
<body>
<ol>
<li>Dad's interests
<ul>
<li>football</li>
<li>knitting</li>
</ul>
</li>
<li>Mom's interests
<ul>
<li>hating football</li>
<li>skydiving</li>
</ul>
</li>
</ol>
<ul>
<li>男生名</li>
<ol>
<li>tom</li>
<li>tom</li>
<li>tom</li>
</ol>
<li>女生名</li>
<ol>
<li>tom</li>
<li>tom</li>
<li>tom</li>
</ol>
</ul>
</body>
</html>