diff --git a/commands/host/xb-setup b/commands/host/xb-setup
index 43fd339..522149c 100755
--- a/commands/host/xb-setup
+++ b/commands/host/xb-setup
@@ -82,6 +82,9 @@ ddev start
 printf '\n# Allow test modules and themes to be installed.\n$settings["extension_discovery_scan_tests"] = TRUE;' \
   >> web/sites/default/settings.ddev.php
 
+# Install Drupal core NPM packages.
+ddev exec --dir /var/www/html/web/core -- npm install
+
 # Build front-end assets.
 ddev xb-npm-build
 
diff --git a/commands/web/xb-stylelint b/commands/web/xb-stylelint
new file mode 100755
index 0000000..c58a5cd
--- /dev/null
+++ b/commands/web/xb-stylelint
@@ -0,0 +1,14 @@
+#!/bin/bash
+
+## #ddev-generated
+## Description: Check Experience Builder code for standards compliance with PHPCS.
+## Example: ddev xb-stylelint
+## Aliases: stylelint,css
+
+UI_DIR="$DDEV_COMPOSER_ROOT/$DDEV_DOCROOT/modules/contrib/experience_builder/ui"
+cd "$UI_DIR" || exit 1
+
+npx stylelint \
+  --config "$DDEV_COMPOSER_ROOT/$DDEV_DOCROOT/core/.stylelintrc.json" \
+  --ignore-pattern "dist/**/*" \
+  "$UI_DIR/**/*.css"
diff --git a/commands/web/xb-stylelint-fix b/commands/web/xb-stylelint-fix
new file mode 100755
index 0000000..e573716
--- /dev/null
+++ b/commands/web/xb-stylelint-fix
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+## #ddev-generated
+## Description: Check Experience Builder code for standards compliance with PHPCS.
+## Example: ddev xb-stylelint-fix
+## Aliases: stylelint-fix,stylelint:fix,css-fix,css:fix
+
+UI_DIR="$DDEV_COMPOSER_ROOT/$DDEV_DOCROOT/modules/contrib/experience_builder/ui"
+cd "$UI_DIR" || exit 1
+
+npx stylelint \
+  --config "$DDEV_COMPOSER_ROOT/$DDEV_DOCROOT/core/.stylelintrc.json" \
+  --ignore-pattern "dist/**/*" \
+  "$UI_DIR/**/*.css" \
+  --fix
diff --git a/install.yaml b/install.yaml
index 62c5ef5..21244d3 100644
--- a/install.yaml
+++ b/install.yaml
@@ -17,6 +17,8 @@ project_files:
   - commands/web/xb-phpcs
   - commands/web/xb-phpstan
   - commands/web/xb-phpunit
+  - commands/web/xb-stylelint
+  - commands/web/xb-stylelint-fix
   - config.drupal-xb-dev.yaml
 
 post_install_actions: