diff --git a/README.md b/README.md
new file mode 100644
index 0000000..127542c
--- /dev/null
+++ b/README.md
@@ -0,0 +1,2 @@
+# Lecture02-HelloWorld
+Lecture 02 -  Hello World
diff --git a/app/src/main/res/drawable/background.jpg b/app/src/main/res/drawable/background.jpg
new file mode 100644
index 0000000..1d723ad
Binary files /dev/null and b/app/src/main/res/drawable/background.jpg differ
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 839cbf9..b2481e0 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -4,24 +4,28 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".MainActivity">
+    tools:context=".MainActivity"
+    android:background="@drawable/background">
 
     <TextView
         android:id="@+id/textview"
-        android:textSize="32sp"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="Hello World2!"
+        android:textColor="#F8F8F6"
+        android:textSize="32sp"
         app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintHorizontal_bias="0.497"
         app:layout_constraintLeft_toLeftOf="parent"
         app:layout_constraintRight_toRightOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.422" />
 
     <Button
         android:id="@+id/btn"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginTop="32dp"
+        android:layout_marginTop="64dp"
         android:text="@string/btn_increment"
         android:textSize="28sp"
         app:layout_constraintEnd_toStartOf="@+id/btn2"