www.netz39.de/_includes/social/icons.liquid

{% if site.data.social.rss or site.theme_settings.rss %}
<li>
    <a feed.xml href="{{ site.data.social.feed.path | default: 'feed.xml' | relative_url }}"
       title="{{ site.data.language.str_rss_follow | default: 'Follow RSS feed' }}"
       target="_blank">
        <span class="fa-stack fa-lg">
            <i class="fas fa-circle fa-stack-2x"></i>
            <i class="fas fa-rss fa-stack-1x fa-inverse"></i>
        </span>
    </a>
</li>
{% endif %}

{% for footer in site.data.icons %}
    {% unless footer[1] == nil %}
        {% assign brand = footer[0] %}
        {% assign id = footer[1] %}
        {% assign data = site.data.icons_builder[brand] %}
        {% if data.icon == nil %}
            {% assign icon = "fab fa-" | append: brand %}
        {% else %}
            {% assign icon = data.icon %}
        {% endif %}
        <li>
            <a href="{{ data.pre | append: id | append: data.pos }}"
               title="{{ site.data.language.str_follow_on }} {{ brand | remove: '-' | capitalize }}"
               target="_blank"
               {% if brand == "mastodon" %}
               rel="me"
               {% else %}
               rel="noopener"
               {% endif %}
            >
            <span class="fa-stack fa-lg">
              <i class="fas fa-circle fa-stack-2x"></i>
              <i class="{{ icon }} fa-stack-1x fa-inverse"></i>
            </span>
            </a>
        </li>
    {% endunless %}
{% endfor %}