diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/watcherTasks.xml b/.idea/watcherTasks.xml
new file mode 100644
index 0000000..902e9bf
--- /dev/null
+++ b/.idea/watcherTasks.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectTasksOptions">
+    <TaskOptions isEnabled="true">
+      <option name="arguments" value="$FileName$" />
+      <option name="checkSyntaxErrors" value="true" />
+      <option name="description" />
+      <option name="exitCodeBehavior" value="ERROR" />
+      <option name="fileExtension" value="py" />
+      <option name="immediateSync" value="false" />
+      <option name="name" value="black" />
+      <option name="output" value="" />
+      <option name="outputFilters">
+        <array />
+      </option>
+      <option name="outputFromStdout" value="false" />
+      <option name="program" value="black" />
+      <option name="runOnExternalChanges" value="false" />
+      <option name="scopeName" value="All Places" />
+      <option name="trackOnlyRoot" value="false" />
+      <option name="workingDir" value="" />
+      <envs />
+    </TaskOptions>
+  </component>
+</project>
\ No newline at end of file
diff --git a/Pipfile b/Pipfile
index 757106b..2a03e66 100644
--- a/Pipfile
+++ b/Pipfile
@@ -4,7 +4,7 @@ url = "https://pypi.org/simple"
 verify_ssl = true
 
 [dev-packages]
-yapf = "*"
+black = "*"
 
 [packages]
 fastapi = "*"
diff --git a/README.md b/README.md
index 785bc05..c2f73ff 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# Todo GraphQL
+# Python GraphQL API
 
 Python GraphQL API template application
 
diff --git a/app/main.py b/app/main.py
index c0ef885..b785f78 100644
--- a/app/main.py
+++ b/app/main.py
@@ -1,11 +1,21 @@
 import graphene
 from fastapi import FastAPI
 from starlette.graphql import GraphQLApp
+from starlette.middleware.cors import CORSMiddleware
 
 from app.schema.mutations.mutations import Mutations
 from app.schema.queries.todo import TodoQuery
 
+origins = ["*"]
+
 app = FastAPI()
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=origins,
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
 app.add_route(
-    "/",
-    GraphQLApp(schema=graphene.Schema(query=TodoQuery, mutation=Mutations)))
+    "/", GraphQLApp(schema=graphene.Schema(query=TodoQuery, mutation=Mutations))
+)
diff --git a/app/schema/types/todo.py b/app/schema/types/todo.py
index 3d81832..624b9ca 100644
--- a/app/schema/types/todo.py
+++ b/app/schema/types/todo.py
@@ -25,5 +25,6 @@ class ResponseField(graphene.ObjectType):
     is_success = graphene.Boolean(default_value=True)
     error_message = graphene.String()
 
+
 class TodoResponseField(ResponseField):
     todo = graphene.Field(TodoType)