app/src/main/res/layout/activity_toolbar_container.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true">

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
                  style="@style/LinearLayout.Base">

        <include layout="@layout/toolbar"/>

        <FrameLayout
            style="@style/FrameLayout.Container" />
    </LinearLayout>

</androidx.coordinatorlayout.widget.CoordinatorLayout>