<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<style>
#hide {
display: none;
}
</style>
</head>
<body>
<h1>Example</h1>
<p>In the example below the div tag is hidden.</p>
<div id="hide">This is the hidden div.</div>
</body>
</html>