{%- set classes = classes|default([]) -%}
{%- if modifier_class %}{% set classes = classes|merge([modifier_class]) %}{% endif -%}

<div class="mb2">
    {% include '../_elements/btn.twig' with {'classes': classes} only %}
</div>
<div class="mb2">
    {% include '../_elements/btn.twig' with {'classes': classes|merge(['btn-line'])} only %}
</div>
<div class="mb2">
    {% include '../_elements/btnIcon.twig' with {'classes': classes} only %}
</div>
<div class="mb2">
    {% include '../_elements/icon.twig' with {'classes': classes|merge(['mr1'])} only %}
    {% include '../_elements/icon.twig' with {'classes': classes|merge(['icon-inline'])} only %}
</div>