An internal CSS is used to define a style for a single HTML page.
An internal CSS is defined in the head section of an HTML page, within a style element:
Example
<!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>
section of an HTML page, within a
EmoticonEmoticon