I have only one workaround,
you can add only upper and lower indents (or margins) to your main content.
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:fab="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingTop="4dp"
android:paddingBottom="4dp">
Then a RecyclerView without defining styles, for example:
<android.support.v7.widget.RecyclerView
android:id="@+id/cardList"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="vertical"/>
CardView , , , - , :
<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:layout_marginLeft="6dp"
android:layout_marginStart="6dp"
android:layout_marginRight="6dp"
android:layout_marginEnd="6dp">