feat(footer): add the component with css

src/DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/app.component.html

@@ -1,4 +1,5 @@
 <app-nav-menu></app-nav-menu>
 <main class="container-fluid">
   <router-outlet></router-outlet>
-</main>
+</main>
+<app-footer></app-footer>

src/DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/app.component.ts

@@ -5,11 +5,12 @@ import { TransferService } from './services/button/transfer.service';
 import { UpdateService } from './services/button/update.service';
 import { RefreshService } from './services/button/refresh.service';
 import { DeletionService } from './services/button/deletion.service';
+import { FooterComponent } from './components/footer/footer.component';
 
 @Component({
   selector: 'app-root',
   standalone: true,
-  imports: [RouterOutlet, NavMenuComponent],
+  imports: [RouterOutlet, NavMenuComponent, FooterComponent],
   templateUrl: './app.component.html',
   styleUrl: './app.component.scss',
   changeDetection: ChangeDetectionStrategy.Default

src/DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/components/footer/footer.component.html

@@ -0,0 +1,9 @@
+<footer>
+    <mat-toolbar color="mat-h3" class="footer-toolbar">
+        <a class="mat-h3 footer-brand-link" [routerLink]="['/']">&copy; 2025 Digital Data</a>
+        <div class="footer-links">
+            <a mat-button class="mat-body-strong" [routerLink]="['/privacy-policy']">Datenschutz</a>
+            <a mat-button class="mat-body-strong" href="https://digitaldata.works/#kontakt" target="_blank">Kontakt</a>
+        </div>
+    </mat-toolbar>
+</footer>

src/DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/components/footer/footer.component.scss

@@ -0,0 +1,23 @@
+.footer-toolbar {
+    position: fixed;
+    bottom: 0;
+    width: 100%;
+    height: 3rem;
+    z-index: 1000;
+    align-items: center;
+}
+
+.footer-links{
+    display: flex;
+    padding: 0;
+    margin: 0;
+    justify-content: space-around;
+    width: 100%;
+}
+
+footer a {
+    padding: 0;
+    margin: 0;
+    text-decoration: none;
+    color: rgb(255, 255, 255);
+}

src/DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/components/footer/footer.component.spec.ts

@@ -0,0 +1,23 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { FooterComponent } from './footer.component';
+
+describe('FooterComponent', () => {
+  let component: FooterComponent;
+  let fixture: ComponentFixture<FooterComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      imports: [FooterComponent]
+    })
+    .compileComponents();
+    
+    fixture = TestBed.createComponent(FooterComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

src/DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/components/footer/footer.component.ts

@@ -0,0 +1,16 @@
+import { Component } from '@angular/core';
+import { MatToolbarModule } from '@angular/material/toolbar';
+import { RouterModule } from '@angular/router';
+
+@Component({
+  selector: 'app-footer',
+  standalone: true,
+  imports: [
+    MatToolbarModule, RouterModule
+  ],
+  templateUrl: './footer.component.html',
+  styleUrl: './footer.component.scss'
+})
+export class FooterComponent {
+
+}

src/DigitalData.UserManager.API/ClientApp/user_manager_ui/src/app/components/forms/group-form/group-form.component.ts

@@ -42,7 +42,7 @@ export class GroupFormComponent {
       .subscribe(() => this.updateErrorMessage());
   }
 
-  updateErrorMessage() {
+  public updateErrorMessage() {
     if (this.groupname.hasError('required')) {
       this.errorMessage.set('Wert eingeben');
     } else {