{# Simple rendering of items list #}
<ul class="rss-items">
    {% for item in items %}
        <li class="rss-item">
            <a href="{{ item.url }}">{{ item.title }}</a>
            <div class="rss-date">{{ item.published|date('Y-m-d H:i') }}</div>
            <div class="rss-content">{{ item.content|raw }}</div>
        </li>
    {% else %}
        <li>No items</li>
    {% endfor %}
</ul>