diff --git a/roles/docker-keycloak/README.md b/roles/docker-keycloak/README.md
index 2520ad88..4a54427e 100644
--- a/roles/docker-keycloak/README.md
+++ b/roles/docker-keycloak/README.md
@@ -13,24 +13,6 @@ The role integrates Keycloak with PostgreSQL as a database and supports operatio
 - Support for running behind a reverse proxy (e.g., NGINX).
 - Automatic creation and management of Docker Compose files.
 
-## Requirements 📋
-- Docker and Docker Compose must be installed on the target system.
-- A working NGINX proxy for forwarding requests to Keycloak (optional).
-
-## Tasks 🛠️
-
-The role performs the following main tasks:
-
-1. **Include database and proxy configuration files:**
-   - Integration of a PostgreSQL database.
-   - Setup of a reverse proxy for the domain.
-
-2. **Generate `docker-compose.yml`:**
-   - Automatically generate the Docker Compose file based on templates and variables.
-
-3. **Start Docker containers:**
-   - The role launches the Keycloak project using Docker Compose.
-
 ## More Information 📚
 
 For more details about Keycloak, check out:
diff --git a/roles/docker-keycloak/templates/env.j2 b/roles/docker-keycloak/templates/env.j2
index 8d28f637..4225eaec 100644
--- a/roles/docker-keycloak/templates/env.j2
+++ b/roles/docker-keycloak/templates/env.j2
@@ -15,4 +15,8 @@ KEYCLOAK_ADMIN_PASSWORD=        "{{applications.keycloak.administrator_password}
 KC_DB=                          postgres
 KC_DB_URL=                      jdbc:postgresql://{{database_host}}/{{database_name}}
 KC_DB_USERNAME=                 {{database_username}}
-KC_DB_PASSWORD=                 {{database_password}}
\ No newline at end of file
+KC_DB_PASSWORD=                 {{database_password}}
+
+# If the initial administrator already exists and the environment variables are still present at startup, an error message stating the failed creation of the initial administrator is shown in the logs. Keycloak ignores the values and starts up correctly.
+KC_BOOTSTRAP_ADMIN_USERNAME=    {{administrator_username}}
+KC_BOOTSTRAP_ADMIN_PASSWORD=    {{administrator_password}}
\ No newline at end of file
diff --git a/roles/docker-mailu/tasks/main.yml b/roles/docker-mailu/tasks/main.yml
index 4a01324c..e8fe4695 100644
--- a/roles/docker-mailu/tasks/main.yml
+++ b/roles/docker-mailu/tasks/main.yml
@@ -22,8 +22,8 @@
 - name: flush docker service
   meta: flush_handlers
 
-- name: execute database migration
+- name: create administrator account
   command:
-    cmd: "docker compose -p mailu exec admin flask mailu admin admin {{primary_domain}} {{applications.mailu.initial_administrator_password}}"
+    cmd: "docker compose -p mailu exec admin flask mailu admin {{administrator_username}} {{primary_domain}} {{applications.mailu.initial_administrator_password}}"
     chdir: "{{docker_compose.directories.instance}}"
-  ignore_errors: true
\ No newline at end of file
+  ignore_errors: true
diff --git a/roles/nginx-modifier-css/templates/global.css.j2 b/roles/nginx-modifier-css/templates/global.css.j2
index 902acd56..05abf5e0 100644
--- a/roles/nginx-modifier-css/templates/global.css.j2
+++ b/roles/nginx-modifier-css/templates/global.css.j2
@@ -50,40 +50,57 @@ HINT:
 
 /* Bootstrap Overrides (Color/Shadow Variables Only) */
 :root {
-    --bs-black: var(--color-01); /* Original tone: Black (#000) */
-    --bs-white: var(--color-99); /* Original tone: White (#fff) */
-    --bs-gray: var(--color-50); /* Original tone: Gray (#6c757d) */
-    --bs-gray-dark: var(--color-20); /* Original tone: Dark Gray (#343a40) */
-    --bs-gray-100: var(--color-95); /* Original tone: Very Light Gray (#f8f9fa) */
-    --bs-gray-200: var(--color-90); /* Original tone: Lighter Gray (#e9ecef) */
-    --bs-gray-300: var(--color-85); /* Original tone: Light Gray (#dee2e6) */
-    --bs-gray-400: var(--color-80); /* Original tone: Gray (#ced4da) */
-    --bs-gray-500: var(--color-70); /* Original tone: Medium Gray (#adb5bd) */
-    --bs-gray-600: var(--color-50); /* Original tone: Gray (#6c757d) */
-    --bs-gray-700: var(--color-40); /* Original tone: Darker Gray (#495057) */
-    --bs-gray-800: var(--color-20); /* Original tone: Dark Gray (#343a40) */
-    --bs-gray-900: var(--color-10); /* Original tone: Very Dark Gray (#212529) */
-    --bs-primary: var(--color-65); /* Original tone: Blue (#0d6efd) */
-    --bs-light: var(--color-95); /* Original tone: Light (#f8f9fa) */
-    --bs-dark: var(--color-10); /* Original tone: Dark (#212529) */
-    --bs-primary-rgb: var(--color-rgb-65); /* Original tone: Blue (13, 110, 253) */
-    --bs-secondary-rgb: var(--color-rgb-50); /* Original tone: Grayish (#6c757d / 108, 117, 125) */
-    --bs-light-rgb: var(--color-rgb-95); /* Original tone: Light (248, 249, 250) */
-    --bs-dark-rgb: var(--color-rgb-10); /* Original tone: Dark (33, 37, 41) */
-    --bs-white-rgb: var(--color-rgb-99); /* Original tone: White (255, 255, 255) */
-    --bs-black-rgb: var(--color-rgb-01); /* Original tone: Black (0, 0, 0) */
-    --bs-body-color-rgb: var(--color-rgb-10); /* Original tone: Dark (#212529 / 33, 37, 41) */
-    --bs-body-bg-rgb: var(--color-rgb-99); /* Original tone: White (#fff / 255, 255, 255) */
-    --bs-body-color: var(--color-10); /* Original tone: Dark (#212529) */
-    --bs-body-bg: var(--color-99); /* Original tone: White (#fff) */
-    --bs-border-color: var(--color-85); /* Original tone: Gray (#dee2e6) */
-    --bs-link-color: var(--color-65); /* Original tone: Blue (#0d6efd) */
-    --bs-link-hover-color: var(--color-60); /* Original tone: Darker Blue (#0a58ca) */
-    --bs-code-color: var(--color-55); /* Original tone: Pink (#d63384) */
-    --bs-highlight-bg: var(--color-93); /* Original tone: Light Yellow (#fff3cd) */
-    --bs-list-group-bg: var(--color-40);
+  --bs-black: var(--color-01); /* Original tone: Black (#000) */
+  --bs-white: var(--color-99); /* Original tone: White (#fff) */
+  --bs-gray: var(--color-50); /* Original tone: Gray (#6c757d) */
+  --bs-gray-dark: var(--color-20); /* Original tone: Dark Gray (#343a40) */
+  --bs-gray-100: var(--color-95); /* Original tone: Very Light Gray (#f8f9fa) */
+  --bs-gray-200: var(--color-90); /* Original tone: Lighter Gray (#e9ecef) */
+  --bs-gray-300: var(--color-85); /* Original tone: Light Gray (#dee2e6) */
+  --bs-gray-400: var(--color-80); /* Original tone: Gray (#ced4da) */
+  --bs-gray-500: var(--color-70); /* Original tone: Medium Gray (#adb5bd) */
+  --bs-gray-600: var(--color-50); /* Original tone: Gray (#6c757d) */
+  --bs-gray-700: var(--color-40); /* Original tone: Darker Gray (#495057) */
+  --bs-gray-800: var(--color-20); /* Original tone: Dark Gray (#343a40) */
+  --bs-gray-900: var(--color-10); /* Original tone: Very Dark Gray (#212529) */
+  --bs-primary: var(--color-65); /* Original tone: Blue (#0d6efd) */
+  --bs-light: var(--color-95); /* Original tone: Light (#f8f9fa) */
+  --bs-dark: var(--color-10); /* Original tone: Dark (#212529) */
+  --bs-primary-rgb: var(--color-rgb-65); /* Original tone: Blue (13, 110, 253) */
+  --bs-secondary-rgb: var(--color-rgb-50); /* Original tone: Grayish (#6c757d / 108, 117, 125) */
+  --bs-light-rgb: var(--color-rgb-95); /* Original tone: Light (248, 249, 250) */
+  --bs-dark-rgb: var(--color-rgb-10); /* Original tone: Dark (33, 37, 41) */
+  --bs-white-rgb: var(--color-rgb-99); /* Original tone: White (255, 255, 255) */
+  --bs-black-rgb: var(--color-rgb-01); /* Original tone: Black (0, 0, 0) */
+  --bs-body-color-rgb: var(--color-rgb-10); /* Original tone: Dark (#212529 / 33, 37, 41) */
+  --bs-body-bg-rgb: var(--color-rgb-99); /* Original tone: White (#fff / 255, 255, 255) */
+  --bs-body-color: var(--color-10); /* Original tone: Dark (#212529) */
+  --bs-body-bg: var(--color-99); /* Original tone: White (#fff) */
+  --bs-border-color: var(--color-85); /* Original tone: Gray (#dee2e6) */
+  --bs-link-color: var(--color-65); /* Original tone: Blue (#0d6efd) */
+  --bs-link-hover-color: var(--color-60); /* Original tone: Darker Blue (#0a58ca) */
+  --bs-code-color: var(--color-55); /* Original tone: Pink (#d63384) */
+  --bs-highlight-bg: var(--color-93); /* Original tone: Light Yellow (#fff3cd) */
+  --bs-list-group-bg: var(--color-40);
+
+  --bs-emphasis-color: var(--color-01); /* Gemappt von #000 */
+  --bs-emphasis-color-rgb: var(--color-rgb-01); /* Gemappt von 0, 0, 0 */
+  --bs-secondary-color: rgba(var(--color-rgb-10), 0.75); /* Gemappt von rgba(33, 37, 41, 0.75) */
+  --bs-secondary-color-rgb: var(--color-rgb-10); /* Gemappt von 33, 37, 41 */
+  --bs-secondary-bg: var(--color-90); /* Gemappt von #e9ecef */
+  --bs-secondary-bg-rgb: var(--color-rgb-90); /* Gemappt von 233, 236, 239 */
+  --bs-tertiary-color: rgba(var(--color-rgb-10), 0.5); /* Gemappt von rgba(33, 37, 41, 0.5) */
+  --bs-tertiary-color-rgb: var(--color-rgb-10); /* Gemappt von 33, 37, 41 */
+  --bs-tertiary-bg: var(--color-95); /* Gemappt von #f8f9fa */
+  --bs-tertiary-bg-rgb: var(--color-rgb-95); /* Gemappt von 248, 249, 250 */
+  --bs-link-color-rgb: var(--color-rgb-65); /* Gemappt von 13, 110, 253 */
+  --bs-link-hover-color-rgb: var(--color-rgb-60); /* Gemappt von 10, 88, 202 */
+  --bs-highlight-color: var(--color-10); /* Gemappt von #212529 */
+  --bs-border-color-translucent: rgba(var(--color-rgb-01), 0.175); /* Gemappt von rgba(0, 0, 0, 0.175) */
+  --bs-focus-ring-color: rgba(var(--color-rgb-65), 0.25); /* Gemappt von rgba(13, 110, 253, 0.25) */
 }
 
+
 /* Discourse */
 :root section#main{
   /* Base Colors */