Relative url base for jekyll

relBase.html

{% assign relBase = '' %}
{% assign tempDepth = page.url | append: 'hackish-solution' | split: '/' | size | minus: 2 %}
{% for i in (1..tempDepth) %}
    {% assign relBase = relBase | append: "../" %}
{% endfor %}
{% if relBase == '' %}
    {% assign relBase = './' %}
{% endif %}

@agowa this is not a layout. put it in _includes and call it in your layout. https://jekyllrb.com/docs/includes/