diff --git a/frontmatter.json b/frontmatter.json
index 1e5e51e..9d66969 100644
--- a/frontmatter.json
+++ b/frontmatter.json
@@ -43,6 +43,16 @@
           "title": "Categories",
           "name": "categories",
           "type": "categories"
+        },
+        {
+          "title": "featured_image",
+          "name": "Thumbnail",
+          "type": "image"
+        },
+        {
+          "title": "lastmod",
+          "name": "Last modified",
+          "type": "datetime"
         }
       ]
     }
@@ -54,4 +64,4 @@
       "filePrefix": ""
     }
   ]
-}
+}
\ No newline at end of file
diff --git a/themes/mmotium/assets/css/style.scss b/themes/mmotium/assets/css/style.scss
index c1cae1d..8501b14 100644
--- a/themes/mmotium/assets/css/style.scss
+++ b/themes/mmotium/assets/css/style.scss
@@ -203,7 +203,18 @@ section.posts {
       margin-bottom: 16px;
     }
 
-    ul {
+    .toc {
+      ul {
+        list-style-position: inside;
+        margin: 0;
+        padding-left: 0;
+      }
+      ul ul {
+        padding-left: 1em;
+      }
+    }
+
+    .categories ul {
       list-style-type: "- ";
       list-style-position: inside;
       padding: 0;
diff --git a/themes/mmotium/layouts/partials/sidebar.html b/themes/mmotium/layouts/partials/sidebar.html
index 0ee6cd3..8288e0e 100644
--- a/themes/mmotium/layouts/partials/sidebar.html
+++ b/themes/mmotium/layouts/partials/sidebar.html
@@ -10,13 +10,25 @@
             Согласен, лучше не стало. Но всё ещё впереди.
         </p>
     </div>
+
+    {{ if strings.Contains .TableOfContents "li" }}
+    <div class="item">
+        <h4>Содержание</h4>
+        <div class="toc">
+            {{ .TableOfContents }}
+        </div>
+    </div>
+    {{ end }}
+
     <div class="item">
         <h4>Категории</h4>
-        <ul>
-            {{ range .Site.Taxonomies.categories }}
-                    <li><a href="{{ .Page.RelPermalink }}">{{ .Page.Title }}</a> {{/* .Count */}}</li>
-            {{ end }}
-        </ul>
+        <div class="categories">
+            <ul>
+                {{ range .Site.Taxonomies.categories }}
+                        <li><a href="{{ .Page.RelPermalink }}">{{ .Page.Title }}</a> {{/* .Count */}}</li>
+                {{ end }}
+            </ul>
+        </div>
     </div>
     <div class="item">
         <p>