af/pages/errors/404.php

<?php
$bodyclasses = '404 error page';
$title = '404';
$tagline = 'Something\'s wrong';
$description = 'Yep, you are looking for something that is not here.';
?>

<?=i('_header')?>

	<article class="body grid grid-cols-1 sm:grid-cols-2 gap-x-6 gap-y-0">
		<section class="full col-start-1 sm:col-span-2">
			<header>
				<h2>Nope</h2>
			</header>
			<p>Sorry, you are looking for something that is not here.</p>
			<p>And just in case, I'm not a teapot.</p>
		</section>
	</article>
		
<?=i('_footer')?>