diff --git a/app/src/main/res/layout/component_card.xml b/app/src/main/res/layout/component_card.xml
index 04be7ca3..568b1611 100644
--- a/app/src/main/res/layout/component_card.xml
+++ b/app/src/main/res/layout/component_card.xml
@@ -1,15 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <android.support.v7.widget.CardView
-    xmlns:card_view="http://schemas.android.com/apk/res-auto"
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/card_view"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    card_view:cardBackgroundColor="?cardBackgroundColor"
-    card_view:cardUseCompatPadding="true"
-    card_view:cardCornerRadius="@dimen/card_corner_radius"
-    card_view:contentPadding="@dimen/activity_margin"
-     >
+    style="?attr/cardStyle" >
 
     <LinearLayout
         android:orientation="horizontal"
diff --git a/app/src/main/res/layout/content_about.xml b/app/src/main/res/layout/content_about.xml
index ccb9a1a5..b37a0cd8 100644
--- a/app/src/main/res/layout/content_about.xml
+++ b/app/src/main/res/layout/content_about.xml
@@ -17,15 +17,13 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_margin="@dimen/activity_margin"
-            app:cardBackgroundColor="?cardBackgroundColor"
-            app:cardElevation="@dimen/card_elevation" >
+            style="?attr/cardStyle" >
 
             <LinearLayout
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:orientation="vertical"
-                android:paddingTop="@dimen/activity_margin"
-                android:paddingBottom="@dimen/activity_margin" >
+                android:paddingBottom="@dimen/activity_margin_small" >
 
                 <LinearLayout
                     android:orientation="horizontal"
@@ -68,22 +66,20 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_margin="@dimen/activity_margin"
-            app:cardBackgroundColor="?cardBackgroundColor"
-            app:cardElevation="@dimen/card_elevation" >
+            style="?attr/cardStyle" >
 
             <LinearLayout
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:orientation="vertical"
-                android:paddingTop="@dimen/activity_margin"
-                android:paddingBottom="@dimen/activity_margin" >
+                android:orientation="vertical" >
 
                 <!-- version -->
                 <LinearLayout
                     android:orientation="horizontal"
                     android:layout_width="match_parent"
                     android:layout_height="?android:attr/listPreferredItemHeight"
-                    android:padding="@dimen/activity_margin_small"
+                    android:paddingTop="@dimen/activity_margin_small"
+                    android:paddingBottom="@dimen/activity_margin_small"
                     android:background="?android:attr/selectableItemBackground"
                     android:gravity="center_vertical" >
 
@@ -123,7 +119,8 @@
                     android:orientation="horizontal"
                     android:layout_width="match_parent"
                     android:layout_height="?android:attr/listPreferredItemHeight"
-                    android:padding="@dimen/activity_margin_small"
+                    android:paddingTop="@dimen/activity_margin_small"
+                    android:paddingBottom="@dimen/activity_margin_small"
                     android:background="?android:attr/selectableItemBackground"
                     android:gravity="center_vertical" >
 
@@ -163,7 +160,8 @@
                     android:orientation="horizontal"
                     android:layout_width="match_parent"
                     android:layout_height="?android:attr/listPreferredItemHeight"
-                    android:padding="@dimen/activity_margin_small"
+                    android:paddingTop="@dimen/activity_margin_small"
+                    android:paddingBottom="@dimen/activity_margin_small"
                     android:background="?android:attr/selectableItemBackground"
                     android:gravity="center_vertical" >
 
@@ -190,7 +188,8 @@
                     android:orientation="horizontal"
                     android:layout_width="match_parent"
                     android:layout_height="?android:attr/listPreferredItemHeight"
-                    android:padding="@dimen/activity_margin_small"
+                    android:paddingTop="@dimen/activity_margin_small"
+                    android:paddingBottom="@dimen/activity_margin_small"
                     android:background="?android:attr/selectableItemBackground"
                     android:gravity="center_vertical" >
 
@@ -217,7 +216,8 @@
                     android:orientation="horizontal"
                     android:layout_width="match_parent"
                     android:layout_height="?android:attr/listPreferredItemHeight"
-                    android:padding="@dimen/activity_margin_small"
+                    android:paddingTop="@dimen/activity_margin_small"
+                    android:paddingBottom="@dimen/activity_margin_small"
                     android:background="?android:attr/selectableItemBackground"
                     android:gravity="center_vertical" >
 
@@ -244,20 +244,16 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_margin="@dimen/activity_margin"
-            app:cardBackgroundColor="?cardBackgroundColor"
-            app:cardElevation="@dimen/card_elevation" >
+            style="?attr/cardStyle" >
 
             <LinearLayout
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:orientation="vertical"
-                android:paddingTop="@dimen/activity_margin"
-                android:paddingBottom="@dimen/activity_margin" >
+                android:orientation="vertical" >
 
                 <TextView
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                    android:layout_marginStart="@dimen/activity_margin"
                     android:text="@string/about_title_authors"/>
 
                 <!-- 1st author -->
@@ -265,8 +261,9 @@
                     android:orientation="horizontal"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                    android:layout_marginTop="@dimen/activity_margin"
-                    android:padding="@dimen/activity_margin_small"
+                    android:layout_marginTop="@dimen/activity_margin_small"
+                    android:paddingTop="@dimen/activity_margin_small"
+                    android:paddingBottom="@dimen/activity_margin_small"
                     android:background="?android:attr/selectableItemBackground"
                     android:gravity="center_vertical" >
 
@@ -339,7 +336,8 @@
                     android:orientation="horizontal"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                    android:padding="@dimen/activity_margin_small"
+                    android:paddingTop="@dimen/activity_margin_small"
+                    android:paddingBottom="@dimen/activity_margin_small"
                     android:background="?android:attr/selectableItemBackground"
                     android:gravity="center_vertical" >
 
@@ -413,7 +411,8 @@
                     android:orientation="horizontal"
                     android:layout_width="match_parent"
                     android:layout_height="?android:attr/listPreferredItemHeight"
-                    android:padding="@dimen/activity_margin_small"
+                    android:paddingTop="@dimen/activity_margin_small"
+                    android:paddingBottom="@dimen/activity_margin_small"
                     android:background="?android:attr/selectableItemBackground"
                     android:gravity="center_vertical" >
 
@@ -440,7 +439,8 @@
                     android:orientation="horizontal"
                     android:layout_width="match_parent"
                     android:layout_height="?android:attr/listPreferredItemHeight"
-                    android:padding="@dimen/activity_margin_small"
+                    android:paddingTop="@dimen/activity_margin_small"
+                    android:paddingBottom="@dimen/activity_margin_small"
                     android:background="?android:attr/selectableItemBackground"
                     android:gravity="center_vertical" >
 
@@ -468,20 +468,16 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_margin="@dimen/activity_margin"
-            app:cardBackgroundColor="?cardBackgroundColor"
-            app:cardElevation="@dimen/card_elevation" >
+            style="?attr/cardStyle" >
 
             <LinearLayout
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:orientation="vertical"
-                android:paddingTop="@dimen/activity_margin"
-                android:paddingBottom="@dimen/activity_margin" >
+                android:orientation="vertical" >
 
                 <TextView
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                    android:layout_marginStart="@dimen/activity_margin"
                     android:text="@string/about_title_support"/>
 
                 <!-- bug reports -->
@@ -491,7 +487,8 @@
                     android:layout_width="match_parent"
                     android:layout_height="?android:attr/listPreferredItemHeight"
                     android:layout_marginTop="@dimen/activity_margin"
-                    android:padding="@dimen/activity_margin_small"
+                    android:paddingTop="@dimen/activity_margin_small"
+                    android:paddingBottom="@dimen/activity_margin_small"
                     android:background="?android:attr/selectableItemBackground"
                     android:gravity="center_vertical" >
 
@@ -531,7 +528,8 @@
                     android:orientation="horizontal"
                     android:layout_width="match_parent"
                     android:layout_height="?android:attr/listPreferredItemHeight"
-                    android:padding="@dimen/activity_margin_small"
+                    android:paddingTop="@dimen/activity_margin_small"
+                    android:paddingBottom="@dimen/activity_margin_small"
                     android:background="?android:attr/selectableItemBackground"
                     android:gravity="center_vertical" >
 
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index f872e031..d0679b57 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -1,6 +1,7 @@
 <resources>
     <!-- Definitions -->
     <attr name="windowBackground" format="reference" />
+    <attr name="cardStyle" format="reference" />
 
     <attr name="colorGithub" format="reference" />
     <attr name="colorPaypal" format="reference" />
@@ -19,7 +20,7 @@
         <item name="colorGithub">@color/github_dark</item>
         <item name="colorPaypal">@color/paypal_dark</item>
 
-        <item name="cardBackgroundColor">?android:colorBackgroundFloating</item>
+        <item name="cardStyle">@style/CardViewStyle</item>
     </style>
 
     <style name="AppTheme.NoActionBar">
@@ -27,6 +28,13 @@
         <item name="windowNoTitle">true</item>
     </style>
 
+    <style name="CardViewStyle" parent="CardView">
+        <item name="cardCornerRadius">@dimen/card_corner_radius</item>
+        <item name="cardUseCompatPadding">true</item>
+        <item name="contentPadding">@dimen/activity_margin</item>
+        <item name="cardElevation">@dimen/card_elevation</item>
+    </style>
+
     <!-- Dark application theme. -->
     <style name="AppTheme.Dark" parent="Theme.AppCompat">
         <item name="colorPrimary">@color/colorPrimary</item>
@@ -38,7 +46,7 @@
         <item name="colorGithub">@color/github_light</item>
         <item name="colorPaypal">@color/paypal_light</item>
 
-        <item name="cardBackgroundColor">?android:colorBackgroundFloating</item>
+        <item name="cardStyle">@style/CardViewStyle</item>
     </style>
 
     <style name="AppTheme.Dark.NoActionBar">
@@ -57,6 +65,10 @@
         <item name="colorGithub">@color/github_light</item>
         <item name="colorPaypal">@color/paypal_light</item>
 
+        <item name="cardStyle">@style/CardViewStyle.Black</item>
+    </style>
+
+    <style name="CardViewStyle.Black">
         <item name="cardBackgroundColor">@android:color/black</item>
     </style>