diff --git a/layouts/docs/baseof.html b/layouts/docs/baseof.html
index 3e058fd0..a167f72b 100644
--- a/layouts/docs/baseof.html
+++ b/layouts/docs/baseof.html
@@ -6,23 +6,26 @@
 */}}
 
 <!doctype html>
-<html lang="{{ .Site.Language.Lang }}" class="no-js">
+<html itemscope itemtype="http://schema.org/WebPage"
+    {{- with .Site.Language.LanguageDirection }} dir="{{ . }}" {{- end -}}
+    {{ with .Site.Language.Lang }} lang="{{ . }}" {{- end }} {{/**/ -}}
+    class="no-js">
   <head>
     {{ partial "head.html" . }}
   </head>
-  <body class="td-{{ .Kind }}">
+  <body class="td-{{ .Kind }}{{ with .Page.Params.body_class }} {{ . }}{{ end }}">
     <header>
       {{ partial "navbar.html" . }}
     </header>
     <div class="container-fluid td-outer">
       <div class="td-main">
         <div class="row flex-xl-nowrap">
-          <div class="col-12 col-md-3 col-xl-3 td-sidebar d-print-none">
+          <aside class="col-12 col-md-3 col-xl-2 td-sidebar d-print-none">
             {{ partial "sidebar.html" . }}
-          </div>
-          <main class="col-12 col-md-9 col-xl-7 pl-md-5" role="main">
+          </aside>
+          <main class="col-12 col-md-9 col-xl-8 ps-md-5" role="main">
             {{ partial "version-banner.html" . }}
-            {{ partial "breadcrumb.html" . }}
+            {{ if not .Site.Params.ui.breadcrumb_disable }}{{ partial "breadcrumb.html" . }}{{ end }}
             {{ block "main" . }}{{ end }}
           </main>
         </div>
