diff --git a/app/config/sculpin_site.yml b/app/config/sculpin_site.yml
index 9a36ec39c..10e214224 100644
--- a/app/config/sculpin_site.yml
+++ b/app/config/sculpin_site.yml
@@ -30,6 +30,9 @@ drupalorg:
url: https://www.drupal.org/u/%drupalorg.username%
username: opdavies
+features:
+ new_css: true
+
github:
url: https://github.com/%github.username%
username: opdavies
diff --git a/app/config/sculpin_site_prod.yml b/app/config/sculpin_site_prod.yml
index f03da7506..99aab8851 100644
--- a/app/config/sculpin_site_prod.yml
+++ b/app/config/sculpin_site_prod.yml
@@ -2,6 +2,9 @@
imports:
- sculpin_site.yml
+features:
+ new_css: false
+
url: https://www.oliverdavies.uk
use_transistor: false
diff --git a/source/_layouts/base.html.twig b/source/_layouts/base.html.twig
index 9b82a90b9..08f1c2cd7 100644
--- a/source/_layouts/base.html.twig
+++ b/source/_layouts/base.html.twig
@@ -4,7 +4,10 @@
-
+ {% if site.features.new_css %}
+ {% else %}
+
+ {% endif %}