website/templates/404.html

{% extends "base.html" %}

{%- block head -%}
{%- set title = "Page not found" -%}
{%- endblock head -%}

{%- block content -%}
<section id="404">
	<div class="block">
		<h1>Page not found</h1>
		<p>Or "<code>404</code>", as the machines like to say it.</p>
		<p>
			<a href="/" class="button arrow">Return home</a>
		</p>
	</div>
</section>
{%- endblock content -%}