fix style code

app/assets/stylesheets/custom.scss

@@ -47,10 +47,10 @@ p {
   }
 }
 
-.navbar ul{
+.navbar ul {
   list-style: none;
   }
-  li a{
+  li a {
   color: #fff;
   font-size: 18px;
   font-weight: bold;

app/controllers/sessions_controller.rb

 class SessionsController < ApplicationController
   include SessionsHelper 
+  
   def new
   end
 

app/controllers/users_controller.rb

 class UsersController < ApplicationController
- 
   def show
     @user = User.find(params[:id])
   end
@@ -11,7 +10,7 @@ class UsersController < ApplicationController
   def create
     @user = User.new(user_params)
     if @user.save
-      log_in @user
+      helpers.log_in @user
       flash[:success] = "Welcome to the Sample App!"
       redirect_to @user
     # Handle a successful save.