diff --git a/app/src/main/java/com/anant/codingguide/activity/ControlActivity.kt b/app/src/main/java/com/anant/codingguide/activity/ControlActivity.kt
index e91c2a0..5a9a153 100644
--- a/app/src/main/java/com/anant/codingguide/activity/ControlActivity.kt
+++ b/app/src/main/java/com/anant/codingguide/activity/ControlActivity.kt
@@ -1,6 +1,5 @@
 package com.anant.codingguide.activity
 
-//import android.widget.Toolbar
 
 import android.content.DialogInterface
 import android.os.Bundle
@@ -17,6 +16,7 @@ import com.anant.codingguide.R
 import com.anant.codingguide.fragment.*
 import com.google.android.material.navigation.NavigationView
 import androidx.appcompat.app.AlertDialog.Builder
+import androidx.fragment.app.FragmentTransaction
 
 
 class ControlActivity : AppCompatActivity() {
@@ -71,7 +71,9 @@ class ControlActivity : AppCompatActivity() {
                 R.id.language->{
                     supportFragmentManager.beginTransaction().replace(R.id.frame,
                         LanguagesFragment()
-                    ).commit()
+                    )
+                        .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE)
+                        .commit()
                     supportActionBar?.title="Programming languages"
                     drawerLayout.closeDrawers()
                 }
@@ -79,7 +81,9 @@ class ControlActivity : AppCompatActivity() {
                 R.id.dev->{
                     supportFragmentManager.beginTransaction().replace(R.id.frame,
                         DevelopmentFragment()
-                    ).commit()
+                    )
+                        .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE)
+                        .commit()
                     supportActionBar?.title="Software Development"
                     drawerLayout.closeDrawers()
                 }
@@ -87,7 +91,9 @@ class ControlActivity : AppCompatActivity() {
                 R.id.quest->{
                     supportFragmentManager.beginTransaction().replace(R.id.frame,
                         CompetitiveProgrammingFragment()
-                    ).commit()
+                    )
+                        .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE)
+                        .commit()
                     supportActionBar?.title="Competitive programming"
                     drawerLayout.closeDrawers()
                 }
@@ -97,7 +103,9 @@ class ControlActivity : AppCompatActivity() {
                 R.id.compiler->{
                     supportFragmentManager.beginTransaction().replace(R.id.frame,
                         CompilerFragment()
-                    ).commit()
+                    )
+                        .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE)
+                        .commit()
                     supportActionBar?.title="Test your Code"
                     drawerLayout.closeDrawers()
                 }
diff --git a/app/src/main/res/drawable/mybutton.xml b/app/src/main/res/drawable/mybutton.xml
index 11271cc..d5b300f 100644
--- a/app/src/main/res/drawable/mybutton.xml
+++ b/app/src/main/res/drawable/mybutton.xml
@@ -3,6 +3,6 @@
     android:shape="rectangle"   >
 
     <solid android:color="#20b6d9"/>
-    <corners android:radius="150dp"/>
+    <corners android:radius="8dp"/>
 
 </shape>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_control.xml b/app/src/main/res/layout/activity_control.xml
index d579ff6..6417185 100644
--- a/app/src/main/res/layout/activity_control.xml
+++ b/app/src/main/res/layout/activity_control.xml
@@ -16,7 +16,6 @@
         <com.google.android.material.appbar.AppBarLayout
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:theme="@style/ThemeOverlay.AppCompat.Dark"
             android:elevation="0dp">
 
 
diff --git a/app/src/main/res/layout/activity_splash.xml b/app/src/main/res/layout/activity_splash.xml
index 73f9566..78b7956 100644
--- a/app/src/main/res/layout/activity_splash.xml
+++ b/app/src/main/res/layout/activity_splash.xml
@@ -4,7 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="#bbdefb"
+    android:background="@color/blueOcean"
     tools:context=".activity.SplashActivity">
 
 
diff --git a/app/src/main/res/layout/activity_welcome.xml b/app/src/main/res/layout/activity_welcome.xml
index cefdc08..96b2e35 100644
--- a/app/src/main/res/layout/activity_welcome.xml
+++ b/app/src/main/res/layout/activity_welcome.xml
@@ -5,7 +5,7 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     tools:context=".activity.WelcomeActivity"
-    android:background="#bbdefb">
+    android:background="@color/blueOcean">
 
 
     <TextView
@@ -15,7 +15,8 @@
         android:text="@string/welcome_to_coding_guide"
         android:layout_centerHorizontal="true"
         android:textSize="28sp"
-        android:textColor="#1a237e"
+        android:textStyle="bold"
+        android:textColor="@color/colorPrimaryDark"
         android:padding="16dp"
         android:layout_marginTop="40dp" />
 
@@ -23,6 +24,7 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:src="@drawable/cod"
+        android:elevation="4dp"
         android:layout_below="@id/txtWelcome"
         android:layout_centerHorizontal="true"
         android:layout_marginTop="50dp"/>
@@ -33,9 +35,10 @@
         android:layout_height="wrap_content"
         android:layout_below="@id/txtWelcome"
         android:layout_centerInParent="true"
+        android:elevation="4dp"
         android:layout_marginTop="300dp"
-        android:background="@color/colorPrimary"
-        android:textColor="#000000"
+        android:background="@drawable/mybutton"
+        android:textColor="@color/white"
         android:text="Get Started"/>
 
 
diff --git a/app/src/main/res/layout/drawer_header.xml b/app/src/main/res/layout/drawer_header.xml
index e3a1972..154265e 100644
--- a/app/src/main/res/layout/drawer_header.xml
+++ b/app/src/main/res/layout/drawer_header.xml
@@ -20,6 +20,7 @@
         android:layout_below="@id/imgLogo"
         android:textSize="38sp"
         android:layout_centerInParent="true"
-        android:textColor="@color/colorPrimaryDark" />
+        android:textStyle="bold"
+        android:textColor="@color/white" />
 
 </RelativeLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_competitiveprogramming.xml b/app/src/main/res/layout/fragment_competitiveprogramming.xml
index 8a411e5..5cb705b 100644
--- a/app/src/main/res/layout/fragment_competitiveprogramming.xml
+++ b/app/src/main/res/layout/fragment_competitiveprogramming.xml
@@ -1,10 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.core.widget.NestedScrollView
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    xmlns:android="http://schemas.android.com/apk/res/android">
+<RelativeLayout
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     tools:context=".fragment.CompetitiveProgrammingFragment"
-    android:background="#bbdefb">
+    android:background="@color/blueOcean">
 
 
     <TextView
@@ -228,4 +232,6 @@
 
 
 
-</RelativeLayout>
\ No newline at end of file
+</RelativeLayout>
+
+</androidx.core.widget.NestedScrollView>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_compiler.xml b/app/src/main/res/layout/fragment_compiler.xml
index fc8b357..c78656b 100644
--- a/app/src/main/res/layout/fragment_compiler.xml
+++ b/app/src/main/res/layout/fragment_compiler.xml
@@ -4,7 +4,7 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     tools:context=".fragment.CompilerFragment"
-    android:background="#bbdefb">
+    android:background="@color/blueOcean">
 
     <TextView
         android:id="@+id/txtReady"
diff --git a/app/src/main/res/layout/fragment_development.xml b/app/src/main/res/layout/fragment_development.xml
index d1a1f76..5ef75e3 100644
--- a/app/src/main/res/layout/fragment_development.xml
+++ b/app/src/main/res/layout/fragment_development.xml
@@ -4,7 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="#bbdefb">
+    android:background="@color/blueOcean">
 
     <RelativeLayout
         android:layout_width="match_parent"
diff --git a/app/src/main/res/layout/fragment_home.xml b/app/src/main/res/layout/fragment_home.xml
index a1bf180..b6a619f 100644
--- a/app/src/main/res/layout/fragment_home.xml
+++ b/app/src/main/res/layout/fragment_home.xml
@@ -3,7 +3,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="#bbdefb"
+    android:background="@color/blueOcean"
     tools:context=".fragment.HomeFragment">
 
 
diff --git a/app/src/main/res/layout/fragment_languages.xml b/app/src/main/res/layout/fragment_languages.xml
index e196b95..228cf3a 100644
--- a/app/src/main/res/layout/fragment_languages.xml
+++ b/app/src/main/res/layout/fragment_languages.xml
@@ -4,7 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="#bbdefb">
+    android:background="@color/blueOcean">
 
 <RelativeLayout
     android:layout_width="match_parent"
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index 60d195e..d437a93 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -3,4 +3,7 @@
     <color name="colorPrimary">#4dabf5</color>
     <color name="colorPrimaryDark">#1769aa</color>
     <color name="colorAccent">#2196f3</color>
+
+    <color name="white">#FFFFFF</color>
+    <color name="blueOcean">#bbdefb</color>
 </resources>
\ No newline at end of file