recycler_view_item.xml

    <TextView
        android:id="@+id/label_tv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/colorPrimaryDark"
        android:elevation="6dp"
        android:textAlignment="center"
        android:textAppearance="@style/Base.TextAppearance.AppCompat.Headline"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />