<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
<style>

h1 
{
background-color:yellow;
}

</style>
</head>
<body>

<h1>This is a Heading</h1>
<p>This is a paragraph.</p>

</body>
</html>

Page Title

This is a Heading

This is a paragraph.