custom_theme/breadcrumbs.html
<div role="navigation" aria-label="breadcrumbs navigation">
<ul class="wy-breadcrumbs">
<li><a href="{{ nav.homepage.url|url }}">Docs</a> »</li>
{% if page %}
{% for doc in page.ancestors %}
{% if doc.link %}
<li><a href="{{ doc.link|e }}">{{ doc.title }}</a> »</li>
{% else %}
<li>{{ doc.title }} »</li>
{% endif %}
{% endfor %}
{% endif %}
{% if page %}<li>{{ page.title }}</li>{% endif %}
<li class="wy-breadcrumbs-aside">
{%- block repo %}
{% if page and page.edit_url %}
{%- if "edit_url" in page.meta: %}
<a href="{{ page.meta["edit_url"] }}" class="icon icon-github"
> Edit on {{ config.repo_name }}</a>
{%- else %}
<a href="{{ page.edit_url }}" class="icon icon-github"
> Edit on {{ config.repo_name }}</a>
{%- endif %}
{% endif %}
{%- endblock %}
</li>
</ul>
{% if config.theme.prev_next_buttons_location|lower in ['top', 'both']
and page and (page.next_page or page.previous_page) %}
<div class="rst-breadcrumbs-buttons" role="navigation" aria-label="breadcrumb navigation">
{%- if page.next_page %}
<a href="{{ page.next_page.url|url }}" class="btn btn-neutral float-right" title="{{ page.next_page.title }}">Next <span class="icon icon-circle-arrow-right"></span></a>
{%- endif %}
{%- if page.previous_page %}
<a href="{{ page.previous_page.url|url }}" class="btn btn-neutral" title="{{ page.previous_page.title }}"><span class="icon icon-circle-arrow-left"></span> Previous</a>
{%- endif %}
</div>
{% endif %}
<hr/>
</div>