Inser the whole style element under the head, parallel to your title element. For example:
<html>
<head>
<title>My Page</title>
<style type="text/css">
p {color:green; background:yellow; line-height: 1.5em; font-size: 0.9em}
h2 {color:red; border-bottom:dashed 1px green}
</style>
</head>
<body>
blah blah...
</body>
</html>
If we look at the whole thing together:
