grav-lecampus/user/themes/lecampus/templates/partials/blog/taxonomy.html.twig

{% if page.taxonomy.tag %}
{% macro pageLinkName(text) %}{{ text|lower|replace({' ':'_'}) }}{% endmacro %}

{% import _self as macro %}

{% for tag in page.taxonomy.tag %}
<span class="tags {{ macro.pageLinkName(tag) }}">
    <a class="label">{{ tag }}</a>
    {% endfor %}
{% endif %}
</span>