How to set Default CSS Settings on HTML <p> Tag

Most browsers will display the <p> element with the following default values.

index.html

Example: HTML

<!DOCTYPE html>
<html>
<head>
<style>
p { display: block; margin-top: 1em; margin-bottom: 1em; margin-left: 0; margin-right: 0;
}
</style>
</head>
<body>
<p>A p element is displayed like this:</p>
<p>This is a paragraph.</p>
<p>Change the default CSS settings to see the effect.</p>
</body>
</html>

Output should be:

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