Revert "no need for custom theme with mkdocs-materia-8.3.9"

This reverts commit a25daf2.

Author: PhilippSalvisberg

custom-theme/partials/header.html

@@ -0,0 +1,41 @@
+<header class="md-header" data-md-component="header">
+  <nav class="md-header-nav md-grid" aria-label="{{ lang.t('header.title') }}">
+    <a href="{{ config.site_url | default(nav.homepage.url, true) | url }}" title="{{ config.site_name }} Version {{ config.extra.guideline_version }}" class="md-header-nav__button md-logo" aria-label="{{ config.site_name }}">
+      {% include "partials/logo.html" %}
+    </a>
+    <label class="md-header-nav__button md-icon" for="__drawer">
+      {% include ".icons/material/menu" ~ ".svg" %}
+    </label>
+    <div class="md-header-nav__title" data-md-component="header-title">
+      {% if config.site_name == page.title %}
+        <div class="md-header-nav__ellipsis md-ellipsis">
+          {{ config.site_name }} Version {{ config.extra.guideline_version }}
+        </div>
+      {% else %}
+        <div class="md-header-nav__ellipsis">
+          <span class="md-header-nav__topic md-ellipsis">
+            {{ config.site_name }} Version {{ config.extra.guideline_version }}
+          </span>
+          <span class="md-header-nav__topic md-ellipsis">
+            {% if page and page.meta and page.meta.title %}
+              {{ page.meta.title }}
+            {% else %}
+              {{ page.title }}
+            {% endif %}
+          </span>
+        </div>
+      {% endif %}
+    </div>
+    {% if "search" in config["plugins"] %}
+      <label class="md-header-nav__button md-icon" for="__search">
+        {% include ".icons/material/magnify.svg" %}
+      </label>
+      {% include "partials/search.html" %}
+    {% endif %}
+    {% if config.repo_url %}
+      <div class="md-header-nav__source">
+        {% include "partials/source.html" %}
+      </div>
+    {% endif %}
+  </nav>
+</header>

mkdocs.yml

@@ -10,6 +10,7 @@ theme:
   icon:
     repo: fontawesome/brands/github-alt
   name: 'material'
+  custom_dir: custom-theme
   favicon: images/favicon.ico
   palette:
     primary: 'white'