diff --git a/mkdocs.yml b/mkdocs.yml
index 293e8e6..c9e034b 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -38,5 +38,5 @@ theme:
 plugins:
   - search
   - open-in-new-tab
-#extra_css:
-#  - extra.css
+extra_css:
+  - extra.css