diff --git a/.gitignore b/.gitignore
index 902de7a3..a98729d5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -65,3 +65,6 @@ yarn-debug.log*
 # Ignore uploaded files in development
 /storage/*
 !/storage/.keep
+
+/app/assets/builds/*
+!/app/assets/builds/.keep
diff --git a/Gemfile b/Gemfile
index 9eff4bb2..ea5e81bc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,8 +8,8 @@ ruby "3.1.1"
 # Bundle edge Rails instead: gem "rails", github: "rails/rails", branch: "main"
 gem "rails", "~> 7.0.2"
 
-# The original asset pipeline for Rails [https://github.com/rails/sprockets-rails]
-gem "sprockets-rails"
+# The modern asset pipeline for Rails [https://github.com/rails/propshaft]
+gem "propshaft"
 
 # Use postgresql as the database for Active Record
 gem "pg", "~> 1.3"
@@ -44,9 +44,6 @@ gem "tzinfo-data", platforms: %i[mingw mswin x64_mingw jruby]
 # Reduces boot times through caching; required in config/boot.rb
 gem "bootsnap", require: false
 
-# Use Sass to process CSS
-# gem "sassc-rails", "~> 2.1"
-
 # Use Active Storage variants [https://guides.rubyonrails.org/active_storage_overview.html#transforming-images]
 gem "image_processing", "~> 1.12"
 
@@ -78,3 +75,5 @@ group :test do
   gem "selenium-webdriver"
   gem "webdrivers"
 end
+
+gem "dartsass-rails"
diff --git a/Gemfile.lock b/Gemfile.lock
index dc86113c..26e9e385 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -89,6 +89,8 @@ GEM
     childprocess (4.1.0)
     concurrent-ruby (1.1.10)
     crass (1.0.6)
+    dartsass-rails (0.3.0)
+      railties (>= 6.0.0)
     debug (1.5.0)
       irb (>= 1.3.6)
       reline (>= 0.2.7)
@@ -149,6 +151,11 @@ GEM
     parser (3.1.1.0)
       ast (~> 2.4.1)
     pg (1.3.5)
+    propshaft (0.6.4)
+      actionpack (>= 7.0.0)
+      activesupport (>= 7.0.0)
+      rack
+      railties (>= 7.0.0)
     public_suffix (4.0.6)
     puma (5.6.4)
       nio4r (~> 2.0)
@@ -233,13 +240,6 @@ GEM
       childprocess (>= 0.5, < 5.0)
       rexml (~> 3.2, >= 3.2.5)
       rubyzip (>= 1.2.2)
-    sprockets (4.0.3)
-      concurrent-ruby (~> 1.0)
-      rack (> 1, < 3)
-    sprockets-rails (3.4.2)
-      actionpack (>= 5.2)
-      activesupport (>= 5.2)
-      sprockets (>= 3.0.0)
     stimulus-rails (1.0.4)
       railties (>= 6.0.0)
     strscan (3.0.1)
@@ -278,11 +278,13 @@ DEPENDENCIES
   brakeman
   bundler-audit
   capybara
+  dartsass-rails
   debug
   image_processing (~> 1.12)
   importmap-rails
   jbuilder
   pg (~> 1.3)
+  propshaft
   puma (~> 5.6)
   rack-mini-profiler
   rails (~> 7.0.2)
@@ -291,7 +293,6 @@ DEPENDENCIES
   rubocop-rails
   rubocop-rspec
   selenium-webdriver
-  sprockets-rails
   stimulus-rails
   turbo-rails
   tzinfo-data
diff --git a/app/assets/builds/.keep b/app/assets/builds/.keep
new file mode 100644
index 00000000..e69de29b
diff --git a/app/assets/config/manifest.js b/app/assets/config/manifest.js
deleted file mode 100644
index ddd546a0..00000000
--- a/app/assets/config/manifest.js
+++ /dev/null
@@ -1,4 +0,0 @@
-//= link_tree ../images
-//= link_directory ../stylesheets .css
-//= link_tree ../../javascript .js
-//= link_tree ../../../vendor/javascript .js
diff --git a/app/assets/stylesheets/application.css b/app/assets/stylesheets/application.css
index 288b9ab7..dcd72732 100644
--- a/app/assets/stylesheets/application.css
+++ b/app/assets/stylesheets/application.css
@@ -1,15 +1 @@
-/*
- * This is a manifest file that'll be compiled into application.css, which will include all the files
- * listed below.
- *
- * Any CSS (and SCSS, if configured) file within this directory, lib/assets/stylesheets, or any plugin's
- * vendor/assets/stylesheets directory can be referenced here using a relative path.
- *
- * You're free to add application-wide styles to this file and they'll appear at the bottom of the
- * compiled file so the styles you add here take precedence over styles defined in any other CSS
- * files in this directory. Styles in this file should be added after the last require_* statement.
- * It is generally better to create a new file per style scope.
- *
- *= require_tree .
- *= require_self
- */
+/* Application styles */
diff --git a/app/assets/stylesheets/application.scss b/app/assets/stylesheets/application.scss
new file mode 100644
index 00000000..8d7af90e
--- /dev/null
+++ b/app/assets/stylesheets/application.scss
@@ -0,0 +1 @@
+// Sassy
diff --git a/app/views/layouts/application.html.erb b/app/views/layouts/application.html.erb
index 8d65ca51..84752c18 100644
--- a/app/views/layouts/application.html.erb
+++ b/app/views/layouts/application.html.erb
@@ -6,9 +6,10 @@
     <%= csrf_meta_tags %>
     <%= csp_meta_tag %>
 
+    <link rel="stylesheet" href="https://cdn.simplecss.org/simple.min.css">
     <%= stylesheet_link_tag "application", "data-turbo-track": "reload" %>
+    <%= stylesheet_link_tag "actiontext" %>
     <%= javascript_importmap_tags %>
-    <link rel="stylesheet" href="https://cdn.simplecss.org/simple.min.css">
   </head>
 
   <body>
diff --git a/config/application.rb b/config/application.rb
index 51bd19ad..e2be583a 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -14,7 +14,6 @@
 require 'action_text/engine'
 require 'action_view/railtie'
 require 'action_cable/engine'
-require 'sprockets/railtie'
 # require "rails/test_unit/railtie"
 
 # Require the gems listed in Gemfile, including any gems
diff --git a/config/environments/development.rb b/config/environments/development.rb
index 94a845c0..cd1ab2be 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-require 'active_support/core_ext/integer/time'
+require "active_support/core_ext/integer/time"
 
 Rails.application.configure do
   # Settings specified here will take precedence over those in config/application.rb.
@@ -24,13 +24,13 @@
 
   # Enable/disable caching. By default caching is disabled.
   # Run rails dev:cache to toggle caching.
-  if Rails.root.join('tmp/caching-dev.txt').exist?
+  if Rails.root.join("tmp/caching-dev.txt").exist?
     config.action_controller.perform_caching = true
     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}"
+      "Cache-Control" => "public, max-age=#{2.days.to_i}"
     }
   else
     config.action_controller.perform_caching = false
@@ -61,8 +61,6 @@
   # Highlight code that triggered database queries in logs.
   config.active_record.verbose_query_logs = true
 
-  # Suppress logger output for asset requests.
-  config.assets.quiet = true
 
   # Raises error for missing translations.
   # config.i18n.raise_on_missing_translations = true
diff --git a/config/environments/production.rb b/config/environments/production.rb
index 21492519..1f6822e3 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-require 'active_support/core_ext/integer/time'
+require "active_support/core_ext/integer/time"
 
 Rails.application.configure do
   # Settings specified here will take precedence over those in config/application.rb.
@@ -24,13 +24,7 @@
 
   # Disable serving static files from the `/public` folder by default since
   # Apache or NGINX already handles this.
-  config.public_file_server.enabled = ENV['RAILS_SERVE_STATIC_FILES'].present?
-
-  # Compress CSS using a preprocessor.
-  # config.assets.css_compressor = :sass
-
-  # Do not fallback to assets pipeline if a precompiled asset is missed.
-  config.assets.compile = false
+  config.public_file_server.enabled = ENV["RAILS_SERVE_STATIC_FILES"].present?
 
   # Enable serving of images, stylesheets, and JavaScripts from an asset server.
   # config.asset_host = "http://assets.example.com"
@@ -84,7 +78,7 @@
   # require "syslog/logger"
   # config.logger = ActiveSupport::TaggedLogging.new(Syslog::Logger.new "app-name")
 
-  if ENV['RAILS_LOG_TO_STDOUT'].present?
+  if ENV["RAILS_LOG_TO_STDOUT"].present?
     logger           = ActiveSupport::Logger.new(STDOUT)
     logger.formatter = config.log_formatter
     config.logger    = ActiveSupport::TaggedLogging.new(logger)
diff --git a/config/environments/test.rb b/config/environments/test.rb
index 94abc5f1..28504a9e 100644
--- a/config/environments/test.rb
+++ b/config/environments/test.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-require 'active_support/core_ext/integer/time'
+require "active_support/core_ext/integer/time"
 
 # The test environment is used exclusively to run your application's
 # test suite. You never need to work with it otherwise. Remember that
@@ -10,7 +10,7 @@
 Rails.application.configure do
   # Settings specified here will take precedence over those in config/application.rb.
 
-  # Turn false under Spring and add config.action_view.cache_template_loading = true
+  # Turn false under Spring and add config.action_view.cache_template_loading = true.
   config.cache_classes = true
 
   # Eager loading loads your whole application. When running a single test locally,
@@ -21,7 +21,7 @@
   # Configure public file server for tests with Cache-Control for performance.
   config.public_file_server.enabled = true
   config.public_file_server.headers = {
-    'Cache-Control' => "public, max-age=#{1.hour.to_i}"
+    "Cache-Control" => "public, max-age=#{1.hour.to_i}"
   }
 
   # Show full error reports and disable caching.
diff --git a/config/initializers/assets.rb b/config/initializers/assets.rb
deleted file mode 100644
index bcafccdd..00000000
--- a/config/initializers/assets.rb
+++ /dev/null
@@ -1,14 +0,0 @@
-# frozen_string_literal: true
-
-# Be sure to restart your server when you modify this file.
-
-# Version of your assets, change this if you want to expire all your assets.
-Rails.application.config.assets.version = '1.0'
-
-# Add additional assets to the asset load path.
-# Rails.application.config.assets.paths << Emoji.images_path
-
-# Precompile additional assets.
-# application.js, application.css, and all non-JS/CSS in the app/assets
-# folder are already added.
-# Rails.application.config.assets.precompile += %w( admin.js admin.css )
diff --git a/config/initializers/filter_parameter_logging.rb b/config/initializers/filter_parameter_logging.rb
index 5118eb69..ca55f952 100644
--- a/config/initializers/filter_parameter_logging.rb
+++ b/config/initializers/filter_parameter_logging.rb
@@ -2,7 +2,9 @@
 
 # Be sure to restart your server when you modify this file.
 
-# Configure sensitive parameters which will be filtered from the log file.
+# Configure parameters to be filtered from the log file. Use this to limit dissemination of
+# sensitive information. See the ActiveSupport::ParameterFilter documentation for supported
+# notations and behaviors.
 Rails.application.config.filter_parameters += [
   :passw, :secret, :token, :_key, :crypt, :salt, :certificate, :otp, :ssn
 ]
diff --git a/config/puma.rb b/config/puma.rb
index 1713441e..ea3b5502 100644
--- a/config/puma.rb
+++ b/config/puma.rb
@@ -6,25 +6,25 @@
 # the maximum value specified for Puma. Default is set to 5 threads for minimum
 # and maximum; this matches the default thread size of Active Record.
 #
-max_threads_count = ENV.fetch('RAILS_MAX_THREADS', 5)
-min_threads_count = ENV.fetch('RAILS_MIN_THREADS') { max_threads_count }
+max_threads_count = ENV.fetch("RAILS_MAX_THREADS") { 5 }
+min_threads_count = ENV.fetch("RAILS_MIN_THREADS") { max_threads_count }
 threads min_threads_count, max_threads_count
 
 # Specifies the `worker_timeout` threshold that Puma will use to wait before
 # terminating a worker in development environments.
 #
-worker_timeout 3600 if ENV.fetch('RAILS_ENV', 'development') == 'development'
+worker_timeout 3600 if ENV.fetch("RAILS_ENV", "development") == "development"
 
 # Specifies the `port` that Puma will listen on to receive requests; default is 3000.
 #
-port ENV.fetch('PORT', 3000)
+port ENV.fetch("PORT") { 3000 }
 
 # Specifies the `environment` that Puma will run in.
 #
-environment ENV.fetch('RAILS_ENV', 'development')
+environment ENV.fetch("RAILS_ENV") { "development" }
 
 # Specifies the `pidfile` that Puma will use.
-pidfile ENV.fetch('PIDFILE', 'tmp/pids/server.pid')
+pidfile ENV.fetch("PIDFILE") { "tmp/pids/server.pid" }
 
 # Specifies the number of `workers` to boot in clustered mode.
 # Workers are forked web server processes. If using threads and workers together
diff --git a/docker-compose.yml b/docker-compose.yml
index 4c3cefc3..464ee4da 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -14,6 +14,14 @@ services:
     depends_on:
       - db
       - redis
+  css:
+    build: .
+    command: bash -c "bin/rails dartsass:watch"
+    volumes:
+      - .:/usr/src/app
+      - bundle:/usr/local/bundle
+    env_file:
+      - .env
   db:
     image: postgres:13
     ports: