diff --git a/config/environments/development.rb b/config/environments/development.rb
index cfc85a5..9b67360 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -24,7 +24,7 @@
     config.action_controller.enable_fragment_cache_logging = true
 
     config.cache_store = :memory_store
-    config.public_file_server.headers = {"Cache-Control" => "public, max-age=#{2.days.to_i}"}
+    config.public_file_server.headers = { "Cache-Control" => "public, max-age=#{2.days.to_i}" }
   else
     config.action_controller.perform_caching = false
 
@@ -41,7 +41,7 @@
   # caching is enabled.
   config.action_mailer.perform_caching = false
 
-  config.action_mailer.default_url_options = {host: "localhost", port: 3000}
+  config.action_mailer.default_url_options = { host: "localhost", port: 3000 }
 
   # Print deprecation notices to the Rails logger.
   config.active_support.deprecation = :log
diff --git a/config/environments/production.rb b/config/environments/production.rb
index 3ca8896..85444e2 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -60,7 +60,7 @@
     .then { |logger| ActiveSupport::TaggedLogging.new(logger) }
 
   # Prepend all log lines with the following tags.
-  config.log_tags = [:request_id]
+  config.log_tags = [ :request_id ]
 
   # "info" includes generic and useful information about system operation, but avoids logging too much
   # information to avoid inadvertent exposure of personally identifiable information (PII). If you
diff --git a/config/environments/test.rb b/config/environments/test.rb
index 7d17b09..0c616a1 100644
--- a/config/environments/test.rb
+++ b/config/environments/test.rb
@@ -18,7 +18,7 @@
   config.eager_load = ENV["CI"].present?
 
   # Configure public file server for tests with Cache-Control for performance.
-  config.public_file_server.headers = {"Cache-Control" => "public, max-age=#{1.hour.to_i}"}
+  config.public_file_server.headers = { "Cache-Control" => "public, max-age=#{1.hour.to_i}" }
 
   # Show full error reports and disable caching.
   config.consider_all_requests_local = true
@@ -45,7 +45,7 @@
 
   # Unlike controllers, the mailer instance doesn't have any context about the
   # incoming request so you'll need to provide the :host parameter yourself.
-  config.action_mailer.default_url_options = {host: "www.example.com"}
+  config.action_mailer.default_url_options = { host: "www.example.com" }
 
   # Print deprecation notices to the stderr.
   config.active_support.deprecation = :stderr
diff --git a/config/routes.rb b/config/routes.rb
index c98a4e8..896133e 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,5 +1,5 @@
 Rails.application.routes.draw do
-  resources :rooms, only: [:index, :show, :new, :create] do
+  resources :rooms, only: [ :index, :show, :new, :create ] do
     resources :messages, only: :create
   end
   root "rooms#index"
diff --git a/test/application_system_test_case.rb b/test/application_system_test_case.rb
index 33264b9..cee29fd 100644
--- a/test/application_system_test_case.rb
+++ b/test/application_system_test_case.rb
@@ -1,5 +1,5 @@
 require "test_helper"
 
 class ApplicationSystemTestCase < ActionDispatch::SystemTestCase
-  driven_by :selenium, using: :headless_chrome, screen_size: [1400, 1400]
+  driven_by :selenium, using: :headless_chrome, screen_size: [ 1400, 1400 ]
 end