diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index f904a958..0b4db6d9 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -1,4 +1,4 @@
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.constraintlayout.widget.ConstraintLayout 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"
@@ -6,8 +6,12 @@
     android:background="@color/colorSurface">
 
     <androidx.coordinatorlayout.widget.CoordinatorLayout
-        android:layout_width="match_parent"
-        android:layout_height="match_parent">
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        app:layout_constraintBottom_toTopOf="@id/bottom_nav"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent">
 
         <com.google.android.material.appbar.AppBarLayout
             android:id="@+id/app_bar_layout"
@@ -16,13 +20,13 @@
 
             <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:background="@color/colorSurface"
                 android:fitsSystemWindows="true"
                 android:minHeight="?attr/actionBarSize"
                 app:collapsedTitleGravity="start|center_vertical"
+                app:contentScrim="@color/colorSecondaryContainer"
                 app:expandedTitleGravity="start|bottom"
                 app:expandedTitleMarginBottom="16dp"
                 app:expandedTitleMarginStart="16dp"
@@ -39,6 +43,7 @@
             </com.google.android.material.appbar.CollapsingToolbarLayout>
 
         </com.google.android.material.appbar.AppBarLayout>
+
         <androidx.fragment.app.FragmentContainerView
 
             android:id="@+id/nav_host_fragment"
@@ -51,4 +56,18 @@
 
     </androidx.coordinatorlayout.widget.CoordinatorLayout>
 
-</FrameLayout>
\ No newline at end of file
+    <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" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file