habitica-android/Habitica/res/layout/customization_grid_item.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/card_view"
    android:layout_height="wrap_content"
    android:layout_width="match_parent">
    <RelativeLayout
        android:id="@+id/linearLayout"
        android:layout_width="match_parent"
        android:layout_height="90dp"
        android:minHeight="60dp"
        android:orientation="vertical"
        android:clickable="true"
        android:background="@drawable/btn_habit_background">
        <View
            android:id="@+id/purchaseOverlay"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_alignParentBottom="true"
            android:layout_alignParentRight="true"
            android:layout_alignParentEnd="true"
            android:layout_alignParentTop="true"
            android:layout_alignParentLeft="true"
            android:layout_alignParentStart="true"
            android:background="@android:color/black" />
        <ImageView
            android:id="@+id/imageView"
            android:layout_width="60dp"
            android:layout_height="60dp"
            android:layout_gravity="center_horizontal"
            android:scaleType="fitEnd"
            android:layout_marginTop="8dp"
            android:layout_marginBottom="8dp"
            android:layout_centerVertical="true"
            android:layout_centerHorizontal="true" />

    </RelativeLayout>
</android.support.v7.widget.CardView>