move carbon ads to sidebars

under the left side on non-widget doc pages, right side otherwise

docs/overrides/main.html

@@ -1,9 +1,47 @@
 {% extends "base.html" %}
 
-{% block content %}
-  {% include "partials/content.html" %}
-  <hr/>
-  <div style="margin: 0 auto; max-width: 400px; margin-top: 40px;">
-    <script async type="text/javascript" src="//cdn.carbonads.com/carbon.js?serve=CWYIL2JU&placement=gethomepagedev&format=cover" id="_carbonads_js"></script>
-  </div>
+{% block site_nav %}
+  <!-- Navigation -->
+  {% if nav %}
+    {% if page.meta and page.meta.hide %}
+      {% set hidden = "hidden" if "navigation" in page.meta.hide %}
+    {% endif %}
+    <div
+      class="md-sidebar md-sidebar--primary"
+      data-md-component="sidebar"
+      data-md-type="navigation"
+      {{ hidden }}
+    >
+      <div class="md-sidebar__scrollwrap">
+        <div class="md-sidebar__inner">
+          {% include "partials/nav.html" %}
+          {% if 'widgets/' not in page.url %}
+            <script async type="text/javascript" src="//cdn.carbonads.com/carbon.js?serve=CWYIL2JU&placement=gethomepagedev&format=cover" id="_carbonads_js"></script>
+          {% endif %}
+        </div>
+      </div>
+    </div>
+  {% endif %}
+
+  <!-- Table of contents -->
+  {% if "toc.integrate" not in features %}
+    {% if page.meta and page.meta.hide %}
+      {% set hidden = "hidden" if "toc" in page.meta.hide %}
+    {% endif %}
+    <div
+      class="md-sidebar md-sidebar--secondary"
+      data-md-component="sidebar"
+      data-md-type="toc"
+      {{ hidden }}
+    >
+      <div class="md-sidebar__scrollwrap">
+        <div class="md-sidebar__inner">
+          {% include "partials/toc.html" %}
+          {% if 'widgets/' in page.url %}
+            <script async type="text/javascript" src="//cdn.carbonads.com/carbon.js?serve=CWYIL2JU&placement=gethomepagedev&format=cover" id="_carbonads_js"></script>
+          {% endif %}
+        </div>
+      </div>
+    </div>
+  {% endif %}
 {% endblock %}

docs/stylesheets/extra.css

@@ -23,6 +23,10 @@
     font-family: var(--md-text-font) !important;
 }
 
+#carbonads {
+    margin-top: 10px;
+}
+
 #carbon-responsive {
     --carbon-padding: 1em;
     --carbon-max-char: 20ch;