diff --git a/layouts/_default/baseof.html b/layouts/_default/baseof.html
index 9660710..8038bb4 100644
--- a/layouts/_default/baseof.html
+++ b/layouts/_default/baseof.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html itemscope itemtype="http://schema.org/WebPage" lang="{{ .Site.Language.Lang }}">
+<html itemscope itemtype="http://schema.org/WebPage" lang="{{ .Site.Language.Lang }}" class="color-toggle-hidden">
 
 <head>
     {{ partial "head/meta" . }}
