<html>
<head>
<style>
/* Default CSS Values */
p {
display: block;
margin-top: 1em;
margin-bottom: 1em;
margin-left: 0;
margin-right: 0;
}
</style>
</head>
<body>
<p>This is a p element (how it is displayed by default).</p>
<p style="margin-left:50px;">This is a customized p element (changed margin-left).</p>
</body>
</html>