diff --git a/app/src/main/java/mw/gri/android/MainActivity.java b/app/src/main/java/mw/gri/android/MainActivity.java
index 15f9190..915ac11 100644
--- a/app/src/main/java/mw/gri/android/MainActivity.java
+++ b/app/src/main/java/mw/gri/android/MainActivity.java
@@ -1,12 +1,9 @@
 package mw.gri.android;
 
 import android.app.NativeActivity;
-import android.content.res.Configuration;
 import android.os.Bundle;
 import android.system.ErrnoException;
 import android.system.Os;
-import android.util.Log;
-import android.view.WindowManager;
 
 public class MainActivity extends NativeActivity {
 
@@ -21,6 +18,11 @@ public class MainActivity extends NativeActivity {
         } catch (ErrnoException e) {
             throw new RuntimeException(e);
         }
+
         super.onCreate(savedInstanceState);
+
+        int navBarHeight = Utils.getNavigationBarHeight(getApplicationContext());
+//        int statusBarHeight = Utils.getStatusBarHeight(getApplicationContext());
+        findViewById(android.R.id.content).setPadding(0, 0, 0, navBarHeight);
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/mw/gri/android/Utils.java b/app/src/main/java/mw/gri/android/Utils.java
new file mode 100644
index 0000000..2725c9d
--- /dev/null
+++ b/app/src/main/java/mw/gri/android/Utils.java
@@ -0,0 +1,75 @@
+package mw.gri.android;
+
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.content.res.Resources;
+import android.graphics.Point;
+import android.os.Build;
+import android.view.Display;
+import android.view.WindowInsets;
+import android.view.WindowManager;
+
+public class Utils {
+
+    public static int getStatusBarHeight(Context context) {
+        WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
+        if (Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.R) {
+            return windowManager
+                    .getCurrentWindowMetrics()
+                    .getWindowInsets()
+                    .getInsets(WindowInsets.Type.navigationBars())
+                    .bottom;
+        } else {
+            Resources res = context.getResources();
+            int statusBarHeight = 24;
+            @SuppressLint({"DiscouragedApi", "InternalInsetResource"})
+            int resourceId = res.getIdentifier("status_bar_height", "dimen", "android");
+            if (resourceId > 0) {
+                statusBarHeight = res.getDimensionPixelSize(resourceId);
+            }
+            return statusBarHeight;
+        }
+    }
+
+    public static int getNavigationBarHeight(Context context) {
+        WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
+        if (Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.R) {
+            return windowManager
+                    .getCurrentWindowMetrics()
+                    .getWindowInsets()
+                    .getInsets(WindowInsets.Type.navigationBars())
+                    .bottom;
+        } else {
+            Point appUsableSize = getAppUsableScreenSize(context);
+            Point realScreenSize = getRealScreenSize(context);
+
+            // navigation bar on the side
+            if (appUsableSize.x < realScreenSize.x) {
+                return appUsableSize.y;
+            }
+
+            // navigation bar at the bottom
+            if (appUsableSize.y < realScreenSize.y) {
+                return realScreenSize.y - appUsableSize.y;
+            }
+
+            // navigation bar is not present
+            return 0;
+        }
+    }
+
+    private static Point getAppUsableScreenSize(Context context) {
+        WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
+        Point size = new Point();
+        windowManager.getDefaultDisplay().getSize(size);
+        return size;
+    }
+
+    private static Point getRealScreenSize(Context context) {
+        WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
+        Display display = windowManager.getDefaultDisplay();
+        Point size = new Point();
+        display.getRealSize(size);
+        return size;
+    }
+}
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index f8c6127..554c178 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -1,10 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <color name="purple_200">#FFBB86FC</color>
-    <color name="purple_500">#FF6200EE</color>
-    <color name="purple_700">#FF3700B3</color>
-    <color name="teal_200">#FF03DAC5</color>
-    <color name="teal_700">#FF018786</color>
+    <color name="yellow">#FFFEF102</color>
+    <color name="yellow_light">#FFFEF102</color>
     <color name="black">#FF000000</color>
     <color name="white">#FFFFFFFF</color>
 </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 fa5fd2b..19b3ae1 100644
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -1,16 +1,13 @@
 <resources xmlns:tools="http://schemas.android.com/tools">
     <!-- Base application theme. -->
-    <style name="Theme.Main" parent="Theme.AppCompat.NoActionBar">
-        <!-- Primary brand color. -->
-        <item name="colorPrimary">@color/purple_500</item>
-        <item name="colorPrimaryVariant">@color/purple_700</item>
-        <item name="colorOnPrimary">@color/white</item>
-        <!-- Secondary brand color. -->
-        <item name="colorSecondary">@color/teal_200</item>
-        <item name="colorSecondaryVariant">@color/teal_700</item>
-        <item name="colorOnSecondary">@color/black</item>
-        <!-- Status bar color. -->
-        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
-        <!-- Customize your theme here. -->
+    <style name="Theme.Main" parent="Theme.AppCompat.Light.NoActionBar">
+        <item name="colorPrimary">@color/yellow</item>
+        <item name="colorOnPrimary">@color/black</item>
+
+        <item name="android:statusBarColor">?attr/colorPrimary</item>
+        <item name="android:windowLightStatusBar">true</item>
+
+        <item name="android:navigationBarColor">?attr/colorPrimary</item>
+        <item name="android:windowLightNavigationBar">true</item>
     </style>
 </resources>
\ No newline at end of file