<html>
<head>
<style>
/* Default CSS Values */
h3 {
display: block;
font-size: 1.17em;
margin-top: 1em;
margin-bottom: 1em;
margin-left: 0;
margin-right: 0;
font-weight: bold;
}
</style>
</head>
<body>
<p>An h3 element is displayed like this:</p>
<h3>This is heading 3</h3>
<p>A customized h3 element (changed font-weight):</p>
<h3 style="font-weight:normal;">This is heading 3</h3>
</body>
</html>