diff --git a/giftcard-example/views/layouts/main.handlebars b/giftcard-example/views/layouts/main.handlebars
index e1a7bd0..bf06d8b 100644
--- a/giftcard-example/views/layouts/main.handlebars
+++ b/giftcard-example/views/layouts/main.handlebars
@@ -9,14 +9,14 @@
-
-
+ href="https://checkoutshopper-test.adyen.com/checkoutshopper/sdk/5.33.0/adyen.css"
+ integrity="sha384-86hqIixzFjIoRoaNYg9pd4mtpn3HtgJmrpYiyTv+3DaGPF70VnRUbtK7MKLTLRd9"
+ crossorigin="anonymous" />
+
+