sample files from a smithsonian project

templates/layout/page--user.html.twig

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+{% extends '@layouts/site-container/site-container.twig' %}
+  {% block site_content %}
+
+    {{ page.header }}
+    {{ drupal_entity('block', 'submenu') }}
+    {{ page.navigation }}
+    {{ page.breadcrumb }}
+    {{ page.highlighted }}
+    {{ page.help }}
+
+    <main id="main" class="main" role="main" tabindex="-1">
+      <div class="l-constrain mt-xl mb-3xl">
+        {{ page.content }}
+      </div>
+    </main>
+
+    {{ page.footer }}
+
+  {% endblock %}
+  {% block additional_content %}
+    {% if not is_front %}
+      {% include '@components/social-sharing/social-sharing.twig' with {
+        share_url: url('<current>'),
+        share_title: share_title,
+        share_id: 'social-sharing',
+      } %}
+    {% endif %}
+  {% endblock %}

templates/layout/page.html.twig

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+{% extends '@layouts/site-container/site-container.twig' %}
+  {% block site_content %}
+
+    {{ page.header }}
+    {{ drupal_entity('block', 'submenu') }}
+    {{ page.navigation }}
+    {{ page.breadcrumb }}
+    {{ page.highlighted }}
+    {{ page.help }}
+
+    <main id="main" class="main" role="main" tabindex="-1">
+      {{ page.preface }}
+      {{ page.content }}
+      {% if not is_front %}
+        <a href="#social-sharing" class="visually-hidden focusable">
+          {{ 'Share this page'|t }}
+        </a>
+      {% endif %}
+      {{ page.postscript }}
+    </main>
+
+    {{ page.footer }}
+
+  {% endblock %}
+  {% block additional_content %}
+    {% if not is_front %}
+      {% include '@components/social-sharing/social-sharing.twig' with {
+        share_url: url('<current>'),
+        share_title: share_title,
+        share_id: 'social-sharing',
+      } %}
+    {% endif %}
+  {% endblock %}

templates/layout/region--footer.html.twig

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+{#
+/**
+ * @file
+ * Theme override to display a region.
+ *
+ * Available variables:
+ * - content: The content for this region, typically blocks.
+ * - attributes: HTML attributes for the region div.
+ * - region: The name of the region variable as defined in the theme's
+ *   .info.yml file.
+ *
+ * @see template_preprocess_region()
+ */
+#}
+{% include "@layouts/footer/footer.twig" with {
+  footer_social_menu: drupal_menu('social-media'),
+  footer_legal_menu: drupal_menu('footer')
+}%}

templates/layout/region--header.html.twig

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+{#
+/**
+ * @file
+ * Theme override to display a region.
+ *
+ * Available variables:
+ * - content: The content for this region, typically blocks.
+ * - attributes: HTML attributes for the region div.
+ * - region: The name of the region variable as defined in the theme's
+ *   .info.yml file.
+ *
+ * @see template_preprocess_region()
+ */
+#}
+{% include "@layouts/header/header.twig" with {
+  header_menu: drupal_menu('main'),
+  header_search: false
+}%}