diff --git a/feature/sponsor/src/main/res/layout/item_sponsor.xml b/feature/sponsor/src/main/res/layout/item_sponsor.xml
index 7ada05e6e..322a7b6c9 100644
--- a/feature/sponsor/src/main/res/layout/item_sponsor.xml
+++ b/feature/sponsor/src/main/res/layout/item_sponsor.xml
@@ -6,23 +6,23 @@
 
     <com.google.android.material.card.MaterialCardView
         android:id="@+id/card"
+        style="@style/Widget.DroidKaigi.Card.Sponsor"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_margin="8dp"
-        app:cardCornerRadius="8dp"
-        app:cardElevation="3dp"
+        android:theme="@style/ThemeOverlay.DroidKaigi.Card.Sponsor"
         >
 
         <androidx.constraintlayout.widget.ConstraintLayout
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:padding="10dp"
             >
 
             <ImageView
                 android:id="@+id/image"
                 android:layout_width="0dp"
                 android:layout_height="72dp"
+                android:contentDescription="@null"
                 app:layout_constraintBottom_toBottomOf="parent"
                 app:layout_constraintEnd_toEndOf="parent"
                 app:layout_constraintStart_toStartOf="parent"
@@ -31,4 +31,4 @@
 
         </androidx.constraintlayout.widget.ConstraintLayout>
     </com.google.android.material.card.MaterialCardView>
-</layout>
\ No newline at end of file
+</layout>
diff --git a/feature/sponsor/src/main/res/layout/item_sponsor_large.xml b/feature/sponsor/src/main/res/layout/item_sponsor_large.xml
index 512a81c5b..e957a050a 100644
--- a/feature/sponsor/src/main/res/layout/item_sponsor_large.xml
+++ b/feature/sponsor/src/main/res/layout/item_sponsor_large.xml
@@ -1,29 +1,34 @@
 <?xml version="1.0" encoding="utf-8"?>
-<layout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
+<layout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    >
 
     <com.google.android.material.card.MaterialCardView
         android:id="@+id/card"
+        style="@style/Widget.DroidKaigi.Card.Sponsor"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_margin="8dp"
-        app:cardCornerRadius="8dp"
-        app:cardElevation="3dp">
+        android:theme="@style/ThemeOverlay.DroidKaigi.Card.Sponsor"
+        >
 
         <androidx.constraintlayout.widget.ConstraintLayout
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:padding="10dp">
+            >
 
             <ImageView
                 android:id="@+id/image"
                 android:layout_width="0dp"
                 android:layout_height="112dp"
+                android:contentDescription="@null"
                 app:layout_constraintBottom_toBottomOf="parent"
                 app:layout_constraintEnd_toEndOf="parent"
                 app:layout_constraintStart_toStartOf="parent"
-                app:layout_constraintTop_toTopOf="parent" />
+                app:layout_constraintTop_toTopOf="parent"
+                />
 
         </androidx.constraintlayout.widget.ConstraintLayout>
     </com.google.android.material.card.MaterialCardView>
-</layout>
\ No newline at end of file
+</layout>
diff --git a/feature/sponsor/src/main/res/values/styles.xml b/feature/sponsor/src/main/res/values/styles.xml
new file mode 100644
index 000000000..b5ca439a2
--- /dev/null
+++ b/feature/sponsor/src/main/res/values/styles.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <style name="Widget.DroidKaigi.Card.Sponsor" parent="Widget.MaterialComponents.CardView">
+        <item name="cardCornerRadius">8dp</item>
+        <item name="cardElevation">3dp</item>
+    </style>
+</resources>
diff --git a/feature/sponsor/src/main/res/values/themes.xml b/feature/sponsor/src/main/res/values/themes.xml
new file mode 100644
index 000000000..fbb2269f6
--- /dev/null
+++ b/feature/sponsor/src/main/res/values/themes.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <style name="ThemeOverlay.DroidKaigi.Card.Sponsor" parent="Theme.MaterialComponents.Light">
+        <item name="colorPrimary">@color/black</item>
+        <item name="colorSurface">@color/white</item>
+    </style>
+</resources>