{% extends "base.html" %}

{% block title %}Page Not Found{% endblock %}

{% block content %}
<h1>Sorry.</h1>
<p>The page you requested doesn't seem to exist.</p>
{% endblock %}

{% extends "base.html" %}

{% block title %}Page Not Found{% endblock %}

{% block content %}
<header>
  <h1>Sorry.</h1>
</header>
<p>The page you requested doesn't seem to exist.</p>
{% endblock %}

Add header to error page.
Add header to error page.
