{% macro rem(values) %}
{% set baselineFontSize = 16 %}
{% set cssValues = [] %}
 
{% for v in values %}
    {% set thisVal = v/baselineFontSize~'rem' %}
    {{ do cssValues|appent(thisVal) }}
{% endfor %}
 
{{ cssValues|join(', ')}}
 
{% endmacro %}

<!-- Macro -->
{% macro footer(tag, footer_text) %}
     <footer> <{{ tag }}>{{ footer_text }} </{{tag}}> </footer>
{% endmacro %}
 
<!-- Usage in other module-->
{% from "custom/page/location/my_macros.html" import footer %}
{{ footer("h2", "My footer info") }}