{% if content.authors %}
<div class="content-authors">
    <ul>
        {% for username in content.authors %}
            {% if username in site.authors %}
            {% set author = site.authors[username] %}
            <li>
                <a href="author-{{username}}.html">
                    <img src="{{ author.avatar }}" alt="{{ author.name }}" class="avatar">
                    {{ author.name }}
                </a>
            </li>
            {% else %}
            {# handle the case when author is defined on content but not on config #}
            <li >
                <a class="secondary" href="author-{{username}}.html">
                    <img src="static/avatar-placeholder.png" alt="{{ username }}" class="avatar">
                    {{ username }}
                </a>
            </li>
            {% endif %}
        {% endfor %}
    </ul>
</div>
{% endif %}