CSS visibility property example at PNLdev

Run

<!DOCTYPE html>
<html>
<head>
<style>
h2.a {
    visibility: visible;
}
h2.b {
    visibility: hidden;
}
</style>
</head>
<body>
    <h1>visibility property example</h1>
    <h2 class="a">This heading is visible</h2>
    <h2 class="b">This heading is hidden</h2>
    <p>Notice that the hidden heading still takes up space on the page.</p>
</body>
</html>