app/themes/landing1/errors/404.phtml
<?php require_once __DIR__ . '/../_header.phtml'; ?>
<main class="hero">
<div class="container error error-404">
<h1>404 - Not Found!</h1>
<p class="lead">Sorry, The page you're looking for cannot be found.</p>
<p>If you keep seeing this nasty page, please write to <a href="mailto:<?=$support?>"><?=$support?></a>.</p>
</div>
</main>
<?php require_once __DIR__ . '/../_footer.phtml'; ?>