How to Use of the class attribute in an HTML document

Note that this is an important paragraph.

index.html

Example: HTML

<!DOCTYPE html>
<html>
<head>
<style>
h1.intro {
  color: blue;
}

p.important {
  color: green;
}
</style>
</head>
<body>

<h1 class="intro">Header 1</h1>
<p>A paragraph.</p>
<p class="important">Note that this is an important paragraph. :)</p>

</body>
</html>

Output should be:

Type:	html
Category:	Web Tutorial
Sub Category:	HTML Attribute
Uploaded by:	Admin