diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 59d77a93..f904a958 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -1,37 +1,54 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:theme="@style/Theme.Lacerta"
-    tools:context=".MainActivity">
+    android:background="@color/colorSurface">
 
-    <androidx.fragment.app.FragmentContainerView
-        android:id="@+id/nav_host_fragment"
-        android:name="androidx.navigation.fragment.NavHostFragment"
-        android:layout_width="0dp"
-        android:layout_height="0dp"
-        app:defaultNavHost="true"
-        app:layout_constraintBottom_toTopOf="@+id/bottom_nav"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent"
-        app:navGraph="@navigation/main_nav"
-        tools:layout="@layout/fragment_home_top" />
+    <androidx.coordinatorlayout.widget.CoordinatorLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
 
-    <com.google.android.material.bottomnavigation.BottomNavigationView
-        android:id="@+id/bottom_nav"
-        android:layout_width="0dp"
-        android:layout_height="wrap_content"
-        android:background="@color/colorSecondaryContainer"
-        app:itemIconTint="@color/colorOnSecondaryContainer"
-        app:itemTextColor="@color/colorOnSecondaryContainer"
-        app:itemActiveIndicatorStyle="@style/Lacerta.Custom.Indicator"
-        app:labelVisibilityMode="selected"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:menu="@menu/bottom_nav_menu" />
+        <com.google.android.material.appbar.AppBarLayout
+            android:id="@+id/app_bar_layout"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
 
-</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
+            <com.google.android.material.appbar.CollapsingToolbarLayout
+                android:id="@+id/collapsing_toolbar"
+                app:contentScrim="@color/colorSecondaryContainer"
+                android:background="@color/colorSurface"
+                android:layout_width="match_parent"
+                android:layout_height="160dp"
+                android:fitsSystemWindows="true"
+                android:minHeight="?attr/actionBarSize"
+                app:collapsedTitleGravity="start|center_vertical"
+                app:expandedTitleGravity="start|bottom"
+                app:expandedTitleMarginBottom="16dp"
+                app:expandedTitleMarginStart="16dp"
+                app:expandedTitleTextAppearance="@style/TextAppearance.MaterialComponents.Headline4"
+                app:layout_scrollFlags="scroll|exitUntilCollapsed">
+
+                <androidx.appcompat.widget.Toolbar
+                    android:id="@+id/toolbar"
+                    android:layout_width="match_parent"
+                    android:layout_height="?attr/actionBarSize"
+                    app:layout_collapseMode="pin"
+                    app:title="HOGE" />
+
+            </com.google.android.material.appbar.CollapsingToolbarLayout>
+
+        </com.google.android.material.appbar.AppBarLayout>
+        <androidx.fragment.app.FragmentContainerView
+
+            android:id="@+id/nav_host_fragment"
+            android:name="androidx.navigation.fragment.NavHostFragment"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            app:defaultNavHost="true"
+            app:navGraph="@navigation/main_nav"
+            tools:layout="@layout/fragment_home_top" />
+
+    </androidx.coordinatorlayout.widget.CoordinatorLayout>
+
+</FrameLayout>
\ No newline at end of file