mihon/app/src/main/res/layout-sw600dp/main_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/root_coordinator"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <include
        android:id="@+id/toolbar_layout"
        layout="@layout/main_activity_toolbar" />

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        <com.google.android.material.navigationrail.NavigationRailView
            android:id="@+id/side_nav"
            style="@style/Widget.MaterialComponents.NavigationRailView.Colored"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            app:itemIconTint="@color/nav_selector"
            app:itemTextColor="@color/nav_selector"
            app:labelVisibilityMode="labeled"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:menu="@menu/main_nav" />

        <com.bluelinelabs.conductor.ChangeHandlerFrameLayout
            android:id="@+id/controller_container"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toEndOf="@+id/side_nav"
            app:layout_constraintTop_toTopOf="parent" />

    </androidx.constraintlayout.widget.ConstraintLayout>

    <include
        android:id="@+id/fab_layout"
        layout="@layout/main_activity_fab" />

</androidx.coordinatorlayout.widget.CoordinatorLayout>