diff --git a/_layouts/default.html b/_layouts/default.html
index d09bf3a0..420c59a6 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -10,7 +10,7 @@
     {% include head/custom.html %}
   </head>
 
-  <body>
+  <body class="layout--{{ page.layout | default: layout.layout }}{% if page.classes or layout.classes %}{{ page.classes | default: layout.classes | join: ' ' | prepend: ' ' }}{% endif %}">
 
     {% include browser-upgrade.html %}
     {% include masthead.html %}
