diff --git a/files/templates/CHRISTMAS/home.html b/files/templates/CHRISTMAS/home.html
index 04d3e40e16..c5948cd583 100644
--- a/files/templates/CHRISTMAS/home.html
+++ b/files/templates/CHRISTMAS/home.html
@@ -2,7 +2,7 @@
 
 {% block subHeader %}
 	<div class="relative max-w-screen-2xl mx-auto px-4 py-4 grid grid-cols-12 rounded-t">
-		<div class="absolute top-0 left-0 w-full h-full bg-gradient-to-t from-gray-300 to-gray-200 dark:bg-none dark:bg-gray-800 rounded-t sub-header-shadow dark:border-b dark:border-gray-700"></div>
+		<div class="absolute top-0 left-0 w-full h-full bg-gradient-to-t from-gray-300 to-gray-200 dark:bg-none dark:bg-gray-800 rounded-t sub-header-shadow dark:border-b dark:border-gray-700 sub-header"></div>
 		<div class="relative col-span-full flex items-center">
 			<div>
 				<h1 class="font-bold text-xl font-heading leading-normal mb-0">
diff --git a/files/templates/CHRISTMAS/notifications.html b/files/templates/CHRISTMAS/notifications.html
index 0c9720bbda..bb4aff476c 100644
--- a/files/templates/CHRISTMAS/notifications.html
+++ b/files/templates/CHRISTMAS/notifications.html
@@ -6,7 +6,7 @@
 
 {% block subHeader %}
 	<div class="relative max-w-screen-2xl mx-auto px-4 py-4 grid grid-cols-12 rounded-t">
-		<div class="absolute top-0 left-0 w-full h-full bg-gradient-to-t from-gray-300 to-gray-200 dark:bg-none dark:bg-gray-800 rounded-t sub-header-shadow dark:border-b dark:border-gray-700"></div>
+		<div class="absolute top-0 left-0 w-full h-full bg-gradient-to-t from-gray-300 to-gray-200 dark:bg-none dark:bg-gray-800 rounded-t sub-header-shadow dark:border-b dark:border-gray-700 sub-header"></div>
 		<div class="relative col-span-full flex items-center">
 			<div>
 				<h1 class="font-bold text-xl font-heading leading-normal mb-0">
diff --git a/files/templates/CHRISTMAS/shop.html b/files/templates/CHRISTMAS/shop.html
index 40542ad825..1d3117bc8f 100644
--- a/files/templates/CHRISTMAS/shop.html
+++ b/files/templates/CHRISTMAS/shop.html
@@ -6,7 +6,7 @@
 
 {% block subHeader %}
 <div class="relative max-w-screen-2xl mx-auto px-4 py-4 grid grid-cols-12 rounded-t">
-		<div class="absolute top-0 left-0 w-full h-full bg-gradient-to-t from-gray-300 to-gray-200 dark:bg-none dark:bg-gray-800 rounded-t sub-header-shadow dark:border-b dark:border-gray-700"></div>
+		<div class="absolute top-0 left-0 w-full h-full bg-gradient-to-t from-gray-300 to-gray-200 dark:bg-none dark:bg-gray-800 rounded-t sub-header-shadow dark:border-b dark:border-gray-700 sub-header"></div>
 		<div class="relative col-span-full flex items-center">
 		<div>
 			<h1 class="font-bold text-xl font-heading leading-normal mb-0">
diff --git a/files/templates/CHRISTMAS/submission.html b/files/templates/CHRISTMAS/submission.html
index 547e7f526c..c213bb4967 100644
--- a/files/templates/CHRISTMAS/submission.html
+++ b/files/templates/CHRISTMAS/submission.html
@@ -103,7 +103,7 @@
 
 {% block subHeader %}
 	<div class="relative max-w-screen-2xl mx-auto px-4 py-4 grid grid-cols-12 rounded-t">
-		<div class="absolute top-0 left-0 w-full h-full bg-gradient-to-t from-gray-300 to-gray-200 dark:bg-none dark:bg-gray-800 rounded-t sub-header-shadow dark:border-b dark:border-gray-700"></div>
+		<div class="absolute top-0 left-0 w-full h-full bg-gradient-to-t from-gray-300 to-gray-200 dark:bg-none dark:bg-gray-800 rounded-t sub-header-shadow dark:border-b dark:border-gray-700 sub-header"></div>
 		<div class="relative col-span-full flex items-center">
 			<div>
 				<h1 class="font-bold text-xl font-heading leading-normal mb-0">
diff --git a/files/templates/CHRISTMAS/submit.html b/files/templates/CHRISTMAS/submit.html
index b161b68366..5376de2d3a 100644
--- a/files/templates/CHRISTMAS/submit.html
+++ b/files/templates/CHRISTMAS/submit.html
@@ -6,7 +6,7 @@
 
 {% block subHeader %}
 <div class="relative max-w-screen-2xl mx-auto px-4 py-4 grid grid-cols-12 rounded-t">
-	<div class="absolute top-0 left-0 w-full h-full bg-gradient-to-t from-gray-300 to-gray-200 dark:bg-none dark:bg-gray-800 rounded-t sub-header-shadow dark:border-b dark:border-gray-700"></div>
+	<div class="absolute top-0 left-0 w-full h-full bg-gradient-to-t from-gray-300 to-gray-200 dark:bg-none dark:bg-gray-800 rounded-t sub-header-shadow dark:border-b dark:border-gray-700 sub-header"></div>
 	<div class="relative col-span-full flex items-center">
 		<div>
 			<h1 class="font-bold text-xl font-heading leading-normal mb-0">