website/templates/image.html

{% extends "base.html" %}
<!--  -->
{% block content %}

<div class="container">
    <img src="{{ page.extra.image }}" />
</div>

<!--  -->
{% endblock content %}

<!--  -->
{% block nav_content %}
<div class="container">
    <span style="color: #03d0e2">{{ page.title }}</span>
    <br /><br />
    <p>{{ page.content | safe }}</p>
    <br />
    <p><a href="../">Show Thumbnails</a></p>
</div>
<!--  -->
{% endblock nav_content %}