lightspeed/templates/404.html

{% extends "index.html" %}
{% block title %}404: Page not found{%endblock title %}

{% block content %}
<h1>404: Page not found</h1>
<p>Sorry, we've misplaced that URL or it's pointing to something that doesn't exist. <a href="{{ config.base_url | safe }}/">Head back home</a> to try finding it again.</p>
{% endblock content %}