CSS display none
<html>
<head>
<style type="text/css">
h1.hidden {display:none}
</style>
</head>
<body>
<h1>This is a visible heading</h1>
<h1 class="hidden">This is a hidden heading</h1>
<p>Notice that the hidden heading does not take up space.</p>
</body>
</html>
<head>
<style type="text/css">
h1.hidden {display:none}
</style>
</head>
<body>
<h1>This is a visible heading</h1>
<h1 class="hidden">This is a hidden heading</h1>
<p>Notice that the hidden heading does not take up space.</p>
</body>
</html>
Result
