add styles and font

android/app/src/main/res/drawable-v24/background_gradient.xml

+<?xml version="1.0" encoding="utf-8"?>
+<shape android:shape="rectangle"
+    xmlns:android="http://schemas.android.com/apk/res/android" >
+
+    <gradient android:angle="45"
+        android:startColor="@color/colorPrimary"
+        android:endColor="@color/colorAccent"/>
+
+</shape>
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android/app/src/main/res/font/font.xml

+<?xml version="1.0" encoding="utf-8"?>
+<font-family xmlns:android="http://schemas.android.com/apk/res/android">
+    <font
+        android:fontStyle="normal"
+        android:fontWeight="400"
+        android:font="@font/circular_book" />
+    <font
+        android:fontStyle="italic"
+        android:fontWeight="400"
+        android:font="@font/circular_bookitalic" />
+</font-family>
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