<a class="sidebar-brand{% if logo %} centered{% endif %}" href="{{ pathto(master_doc) }}">
  {%- block brand_content %}
  {#- Remember to update the prefetch logic in `block logo_prefetch_links` in base.html #}
  {%- if logo_url %}
  <div class="sidebar-logo-container">
    <img class="sidebar-logo" src="{{ logo_url }}" alt="Logo"/>
  </div>
  {%- endif %}
  {%- if theme_light_logo and theme_dark_logo %}
  <div class="sidebar-logo-container">
    <img class="sidebar-logo only-light" width="850" height="256" src="{{ pathto('_static/' + theme_light_logo, 1) }}" alt="Spack Logo"/>
    <img class="sidebar-logo only-dark" width="850" height="256" src="{{ pathto('_static/' + theme_dark_logo, 1) }}" alt="Spack Logo"/>
  </div>
  {%- endif %}
  {% if not theme_sidebar_hide_name %}
  <span class="sidebar-brand-text">{{ docstitle if docstitle else project }}</span>
  {%- endif %}
  {% endblock brand_content %}
</a>

{%- if READTHEDOCS %}
<div class="version-switch"></div>
{%- endif %}
