<TextView

    android:id="@+id/text_message"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content"

    android:layout_below="@+id/text_header"

    android:layout_marginLeft="@dimen/activity_horizontal_margin"

    android:layout_marginStart="@dimen/activity_horizontal_margin"

    android:textAppearance="?android:attr/textAppearanceMedium" />