{% assign back_page = site.pages | find: "name", page.back_page %}
{% if back_page != null %}
    <p class="back-link">
    <a href="{{ back_page.url | relative_url }}"><span class="back-arrow icon">{% include svg/back-arrow.svg %}</span>{{ back_page.short_title | default: back_page.title }}</a>
    </p>
{% endif %}