Try adding a TOC sidebar

docs/_layouts/default.html

@@ -6,7 +6,21 @@
         {% include navbar.html %}
         
         <main class="container-fluid">
-        {{ content }}
+            <div class="row">
+                <div class="col-12 col-md-3 order-md-2 theme-sidebar-primary">
+                    <button class="btn d-md-none w-100" type="button" data-toggle="collapse" data-target="#theme-sidebar-nav">
+                        <i class="fa fa-bars fa-lg"></i>
+                    </button>
+
+                    <nav class="collapse" id="theme-sidebar-nav">
+                        {% include toc.html html=content class="nav.flex-column" item_class="nav-item" %}
+                    </nav>
+                </div>
+
+                <div class="col-12 col-md-9 order-md-1">
+                    {{ content }}
+                </div>
+            </div>
         </main>
         
         {% include footer.html %}