v1/web/modules/contrib/ctools/templates/ctools-wizard-trail.html.twig

{% if trail %}
<div class="wizard-trail">
    {% for key, value in trail %}
        {% if key is same as(step) %}
            <strong>{{ value }}</strong>
        {% else %}
            {{ value }}
        {% endif %}
        {% if value is not same as(trail|last) %}
            {{ divider }}
        {% endif %}
    {% endfor %}
</div>
{% endif %}