diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index b224cb1..ab06d67 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.fatapp.oxygentoolbox">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
     <uses-permission android:name="android.permission.VIBRATE" />
 
diff --git a/app/src/main/java/com/fatapp/oxygentoolbox/layout/FoldLayout.java b/app/src/main/java/com/fatapp/oxygentoolbox/layout/FoldLayout.java
index 4a4461d..a5402f8 100644
--- a/app/src/main/java/com/fatapp/oxygentoolbox/layout/FoldLayout.java
+++ b/app/src/main/java/com/fatapp/oxygentoolbox/layout/FoldLayout.java
@@ -14,6 +14,8 @@ import android.view.ViewGroup;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
 
+import androidx.appcompat.content.res.AppCompatResources;
+
 import com.fatapp.oxygentoolbox.R;
 
 import java.util.List;
@@ -23,6 +25,7 @@ public class FoldLayout extends LinearLayout implements View.OnClickListener {
     private boolean init;
     private final int layoutId;
     private boolean isShow;
+    private boolean isDefaultShow;
     private LinearLayout content;
     private ValueAnimator showAnimator;
     private ValueAnimator hideAnimator;
@@ -35,13 +38,14 @@ public class FoldLayout extends LinearLayout implements View.OnClickListener {
     }
 
     public FoldLayout(Context context, AttributeSet attrs) {
-        this(context, attrs, 0);
+        this(context, attrs, 0, false);
     }
 
-    public FoldLayout(Context context, AttributeSet attrs, int defStyleAttr) {
+    public FoldLayout(Context context, AttributeSet attrs, int defStyleAttr, boolean isDefaultShow) {
         super(context, attrs, defStyleAttr);
         @SuppressLint("Recycle") TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.FoldLayout, defStyleAttr, 0);
         layoutId = ta.getResourceId(R.styleable.FoldLayout_layoutId, -1);
+        this.isDefaultShow = isDefaultShow;
         init(context);
     }
 
@@ -50,6 +54,14 @@ public class FoldLayout extends LinearLayout implements View.OnClickListener {
         addDefaultLayout(context);
     }
 
+    public void setDefaultShow(boolean defaultShow) {
+        isDefaultShow = defaultShow;
+    }
+
+    public View getDefaultView() {
+        return defaultView;
+    }
+
     /**
      * Init
      */
@@ -87,8 +99,22 @@ public class FoldLayout extends LinearLayout implements View.OnClickListener {
         int contentHeight = content.getMeasuredHeight();
         if (!init) {
             LayoutParams layoutParams = (LayoutParams) content.getLayoutParams();
-            layoutParams.height = 0;
+            if (isDefaultShow) {
+                isShow = true;
+                layoutParams.height = contentHeight;
+                LinearLayout linearLayout = defaultView.findViewById(R.id.fold_layout_linear_layout);
+                linearLayout.setBackground(AppCompatResources.getDrawable(getContext(), R.drawable.top_radius_background));
+                ImageView imageView = defaultView.findViewById(R.id.arrow_icon);
+                imageView.setImageDrawable(AppCompatResources.getDrawable(getContext(), R.drawable.down_to_right_arrow));
+            } else {
+                layoutParams.height = 0;
+                LinearLayout linearLayout = defaultView.findViewById(R.id.fold_layout_linear_layout);
+                linearLayout.setBackground(AppCompatResources.getDrawable(getContext(), R.drawable.top_bottom_radius_background));
+                ImageView imageView = defaultView.findViewById(R.id.arrow_icon);
+                imageView.setImageDrawable(AppCompatResources.getDrawable(getContext(), R.drawable.right_to_down_arrow));
+            }
             content.setLayoutParams(layoutParams);
+
             showAnimator = ValueAnimator.ofInt(0, contentHeight);
             showAnimator.addUpdateListener(animation -> {
                 layoutParams.height = (int) animation.getAnimatedValue();
diff --git a/app/src/main/java/com/fatapp/oxygentoolbox/ui/home/tools/ToolsFragment.java b/app/src/main/java/com/fatapp/oxygentoolbox/ui/home/tools/ToolsFragment.java
index 28c6279..0aa185d 100644
--- a/app/src/main/java/com/fatapp/oxygentoolbox/ui/home/tools/ToolsFragment.java
+++ b/app/src/main/java/com/fatapp/oxygentoolbox/ui/home/tools/ToolsFragment.java
@@ -98,6 +98,7 @@ public class ToolsFragment extends Fragment {
 
             View foldLayoutHead = getLayoutInflater().inflate(R.layout.fold_layout, null);
             FoldLayout foldLayout = foldLayoutHead.findViewById(R.id.fold_layout);
+            foldLayout.setDefaultShow(true);
             ((TextView) foldLayout.findViewById(R.id.fold_layout_text_view)).setText(tool.getFoldLayoutTitle());
 
             TextView foldLayoutIcon = foldLayout.findViewById(R.id.fold_layout_icon);
diff --git a/app/src/main/res/layout/fold_layout_head.xml b/app/src/main/res/layout/fold_layout_head.xml
index b56319a..faa1579 100644
--- a/app/src/main/res/layout/fold_layout_head.xml
+++ b/app/src/main/res/layout/fold_layout_head.xml
@@ -1,13 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:id="@+id/fold_layout_linear_layout"
     android:layout_width="match_parent"
     android:layout_height="40dp"
     android:layout_marginLeft="10dp"
     android:layout_marginTop="10dp"
     android:layout_marginRight="10dp"
-    android:background="@drawable/top_bottom_radius_background"
     android:gravity="center_vertical">
 
     <TextView
@@ -34,6 +32,5 @@
         android:layout_width="0dp"
         android:layout_height="15dp"
         android:layout_weight="1"
-        android:contentDescription="@string/arrow_icon"
-        app:srcCompat="@drawable/right_to_down_arrow" />
+        android:contentDescription="@string/arrow_icon" />
 </LinearLayout>
\ No newline at end of file
diff --git a/app/src/main/res/values/dimens.xml b/app/src/main/res/values/dimens.xml
index 77f313c..140030b 100644
--- a/app/src/main/res/values/dimens.xml
+++ b/app/src/main/res/values/dimens.xml
@@ -5,4 +5,5 @@
     <dimen name="activity_vertical_margin">16dp</dimen>
     <dimen name="nav_header_vertical_spacing">8dp</dimen>
     <dimen name="nav_header_height">176dp</dimen>
+    <dimen name="default_text_size">20sp</dimen>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
index 859ce7c..24fca84 100644
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<resources xmlns:tools="http://schemas.android.com/tools">
+<resources>
     <!-- Base application theme. -->
     <style name="Theme.OxygenToolbox.Default" parent="Theme.MaterialComponents.DayNight.DarkActionBar.Bridge">
         <!-- Primary brand color. -->
@@ -11,11 +11,12 @@
         <item name="colorSecondaryVariant">@color/default_app_second_theme</item>
         <item name="colorOnSecondary">@color/default_app_second_on_theme</item>
         <!-- Status bar color. -->
-        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <item name="android:statusBarColor" >?attr/colorPrimaryVariant</item>
         <!-- Customize your theme here. -->
         <item name="windowActionBar">false</item>
         <item name="windowNoTitle">true</item>
         <item name="android:windowTranslucentNavigation">true</item>
+        <item name="android:windowDisablePreview">true</item>
 
         <item name="app_theme">@color/default_app_theme</item>
         <item name="app_on_theme">@color/default_app_on_theme</item>