diff --git a/main.tf b/main.tf
index 510ad3f..4781018 100644
--- a/main.tf
+++ b/main.tf
@@ -1,5 +1,5 @@
 provider "aws" {
-  region  = local.region
+  region = local.region
 }
 
 locals {
@@ -28,12 +28,15 @@ module "vpc" {
   private_subnets = ["10.0.1.0/24", "10.0.2.0/24", "10.0.3.0/24"]
   public_subnets  = ["10.0.101.0/24", "10.0.102.0/24", "10.0.103.0/24"]
 
+
   enable_nat_gateway = true
   single_nat_gateway = true
 
   enable_dns_hostnames = true
   enable_dns_support   = true
 
+  enable_flow_log = true
+
   tags = {
     terraform   = "true"
     environment = "test"
@@ -45,7 +48,7 @@ module "vpc" {
 module "web_server_sg" {
   source              = "terraform-aws-modules/security-group/aws//modules/http-80"
   name                = "${local.name}-web-server-sg"
-  description =  "Security group for web server of ${local.name}"
+  description         = "Security group for web server of ${local.name}"
   vpc_id              = module.vpc.vpc_id
   ingress_cidr_blocks = ["0.0.0.0/0"]
   ingress_rules       = ["http-80-tcp", "https-443-tcp", "ssh-tcp"]
@@ -56,14 +59,14 @@ module "web_server_sg" {
 ### create an ec2 instance
 module "ec2_instance" {
   source = "terraform-aws-modules/ec2-instance/aws"
-  name = "${local.name}-web-server"
+  name   = "${local.name}-web-server"
 
   instance_type          = "t2.micro"
   key_name               = module.key_pair.key_pair_name
   monitoring             = true
-  vpc_security_group_ids = [ module.web_server_sg.security_group_id ]
+  vpc_security_group_ids = [module.web_server_sg.security_group_id]
   subnet_id              = module.vpc.public_subnets[0]
-  user_data = file("userdata.sh")
+  user_data              = file("userdata.sh")
 
   tags = {
     Terraform   = "true"