Cookies, CSS, PHP | Type: PHPSet Cookie, Change Content (or change class)

Using a cookie to change content for repeat visits.

At the top of your page (before doc declaration):
<?php
$revisit = false;
if(isset($_COOKIE['div'])){
    $revisit = true;
} else {
    setcookie('div', true, 86400 + time()); //24 hours shown (seconds)
    $revisit = false;
}
?>

Then where you want your on-page content:
<?php
if($revisit){
    echo '<div>You’ve been here before!</div>';
} else {
    echo '<div>It’s your first time!</div>';
}
?>
OR
<?php
if($revisit){
    echo '<div class="something-after">content</div>';
} else {
    echo '<div class="something-first">content</div>';
}
?>