diff --git a/.idea/deploymentTargetSelector.xml b/.idea/deploymentTargetSelector.xml
index 389cc96..cf0a0e8 100644
--- a/.idea/deploymentTargetSelector.xml
+++ b/.idea/deploymentTargetSelector.xml
@@ -4,10 +4,10 @@
     <selectionStates>
       <SelectionState runConfigName="app">
         <option name="selectionMode" value="DROPDOWN" />
-        <DropdownSelection timestamp="2024-09-03T17:22:10.842623980Z">
+        <DropdownSelection timestamp="2024-09-03T17:28:26.836392690Z">
           <Target type="DEFAULT_BOOT">
             <handle>
-              <DeviceId pluginId="LocalEmulator" identifier="path=/home/celeste/.android/avd/Pixel_8_Pro_API_28.avd" />
+              <DeviceId pluginId="PhysicalDevice" identifier="serial=2C121JEHN09697" />
             </handle>
           </Target>
         </DropdownSelection>
diff --git a/app/src/main/java/com/bouillie/web/tuto_1.java b/app/src/main/java/com/bouillie/web/tuto_1.java
index db23d05..25a4b5c 100644
--- a/app/src/main/java/com/bouillie/web/tuto_1.java
+++ b/app/src/main/java/com/bouillie/web/tuto_1.java
@@ -4,27 +4,20 @@
 
 import android.content.Intent;
 import android.os.Bundle;
-import android.view.View;
 import android.widget.Button;
 
 import androidx.appcompat.app.AppCompatActivity;
 
 import com.boullie.web.R;
-import com.google.android.gms.tasks.Task;
 import com.google.android.material.color.DynamicColors;
-import com.google.android.play.core.appupdate.AppUpdateInfo;
-import com.google.android.play.core.appupdate.AppUpdateManager;
-import com.google.android.play.core.appupdate.AppUpdateManagerFactory;
-import com.google.android.play.core.install.model.AppUpdateType;
-import com.google.android.play.core.install.model.UpdateAvailability;
 
 public class tuto_1 extends AppCompatActivity {
-    private int selectedTheme;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         int savedTheme = getSharedPreferences("PREFERENCE", MODE_PRIVATE).getInt("selected_theme", NONE);
 
+        int selectedTheme;
         if (savedTheme != NONE) {
             selectedTheme = savedTheme;
         }else{
@@ -33,24 +26,6 @@ protected void onCreate(Bundle savedInstanceState) {
         setTheme(selectedTheme);
         DynamicColors.applyToActivitiesIfAvailable(this.getApplication());
         setContentView(R.layout.tuto_1);
-        AppUpdateManager appUpdateManager = AppUpdateManagerFactory.create(this);
-
-// Returns an intent object that you use to check for an update.
-        Task<AppUpdateInfo> appUpdateInfoTask = appUpdateManager.getAppUpdateInfo();
-
-// Checks that the platform will allow the specified type of update.
-        appUpdateInfoTask.addOnSuccessListener(appUpdateInfo -> {
-            if (appUpdateInfo.updateAvailability() == UpdateAvailability.UPDATE_AVAILABLE) {
-                appUpdateInfo.isUpdateTypeAllowed(AppUpdateType.IMMEDIATE);
-            }// This example applies an immediate update. To apply a flexible update
-// instead, pass in AppUpdateType.FLEXIBLE
-// Request the update.
-        });
-        DynamicColors.applyToActivitiesIfAvailable(getApplication());
-        if (getIntent().getBooleanExtra("EXIT", false)) {
-            finish();
-
-        }
         Button btn = findViewById(R.id.button4);
         btn.setOnClickListener(v -> {
             Intent intent = new Intent(tuto_1.this, tuto_2.class);
@@ -60,17 +35,4 @@ protected void onCreate(Bundle savedInstanceState) {
         });
     }
 
-
-    @Override
-    public void onWindowFocusChanged(boolean hasFocus) {
-        super.onWindowFocusChanged(hasFocus);
-        if (hasFocus) {
-            View decorView = getWindow().getDecorView();
-            decorView.setSystemUiVisibility(
-                    View.SYSTEM_UI_FLAG_LAYOUT_STABLE
-                            | View.SYSTEM_UI_FLAG_LOW_PROFILE);
-        }
-
-    }
-
 }
diff --git a/app/src/main/res/layout/tuto_1.xml b/app/src/main/res/layout/tuto_1.xml
index 599c510..c036764 100644
--- a/app/src/main/res/layout/tuto_1.xml
+++ b/app/src/main/res/layout/tuto_1.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <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"
     android:layout_height="match_parent"
@@ -7,11 +8,13 @@
 
     <LinearLayout
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
+        android:layout_height="wrap_content"
         android:gravity="center_horizontal"
         android:orientation="vertical"
-        tools:layout_editor_absoluteX="1dp"
-        tools:layout_editor_absoluteY="1dp">
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent">
 
         <TextView
             android:layout_width="match_parent"
diff --git a/app/src/main/res/layout/tuto_2.xml b/app/src/main/res/layout/tuto_2.xml
index afdbb2d..44a3384 100644
--- a/app/src/main/res/layout/tuto_2.xml
+++ b/app/src/main/res/layout/tuto_2.xml
@@ -1,16 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
     <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
         android:gravity="center_horizontal"
         android:orientation="vertical"
-        tools:layout_editor_absoluteX="1dp"
-        tools:layout_editor_absoluteY="1dp">
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent">
 
         <TextView
             android:layout_width="match_parent"
@@ -45,7 +47,7 @@
                     android:textAppearance="@style/TextAppearance.AppCompat.Large" />
 
                 <Space
-                    android:layout_width="61dp"
+                    android:layout_width="0dp"
                     android:layout_height="match_parent"
                     android:layout_weight="1" />
 
diff --git a/app/src/main/res/layout/tuto_3.xml b/app/src/main/res/layout/tuto_3.xml
index 91f2717..aa46857 100644
--- a/app/src/main/res/layout/tuto_3.xml
+++ b/app/src/main/res/layout/tuto_3.xml
@@ -1,17 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    tools:context=".tuto_3">
+    android:layout_height="match_parent">
 
     <LinearLayout
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
+        android:layout_height="wrap_content"
         android:gravity="center_horizontal"
         android:orientation="vertical"
-        tools:layout_editor_absoluteX="1dp"
-        tools:layout_editor_absoluteY="1dp">
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent">
 
         <TextView
             android:layout_width="match_parent"