{%- assign EMPTY = "" | split: "" %}
{%- assign footer_columns = site.data.footer.columns | default: EMPTY %}
{%- assign footer_copyright = site.data.footer.copyright %}
{%- assign footer_extra_line = site.data.footer.extra_line %}
{%- if footer_columns != EMPTY or footer_copyright or footer_extra_line %}
<footer id="footer">
    {%- if footer_columns != EMPTY or footer_extra_line %}
    <div class="container py-4 g-lg-5">
        {%- if footer_columns != EMPTY %}
        <div class="row g-4 d-flex justify-