{{ define "main" }}
<div class="row justify-content-center">
  <div class="col-md-12 col-lg-10 col-xl-8">
    <article>
      <h1 class="text-center">Page not found</h1>
      <p class="text-center">The page you requested could not be found.</p>
    </article>
  </div>
</div>
{{ end }}