Internal CSS

The internal style sheet is used to add a unique style for a single document. It is defined in <head> section of the HTML page inside the <style> tag.

See this example:

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Example of Internal CSS</title>
<style>  
	h1,p {  
	   color:#11a286;  
	   font-size:18px;  
	}   
</style>  
</head>
<body>  
	 <h1>This is a Heading</h1> 
	 <p>This is a paragraph</p> 
 </body>
</html>