diff --git a/templates/index.html b/templates/index.html
index 44d51c8..0c2ed69 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -12,15 +12,15 @@
crossorigin="anonymous"/>
-
+
+ href="https://checkoutshopper-test.adyen.com/checkoutshopper/sdk/5.68.0/adyen.css"
+ integrity="sha384-gpOE6R0K50VgXe6u/pyjzkKl4Kr8hXu93KUCTmC4LqbO9mpoGUYsrmeVLcp2eejn"
+ crossorigin="anonymous">