Programming Code Center(PCC)
[HTML]

(PCC)::[How-to-use-HTML-with-internal-CSS]::[html]

File Name : index.html

<!DOCTYPE html>
<html>
<head>
<style>
body {background-color: powderblue;}
h1   {color: blue;}
p    {color: red;}
</style>
</head>
<body>

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

</body>
</html>

Output :

This is a heading

This is a paragraph.