feat(frontend): Add style to make header look like it should #1677

* feat(frontend): Add style to make header look like it should  #1677

* refactor(frontend): Format code  #1677

* style(frontend): Format code  #1677

Author: ManuelMoeri

frontend/src/app/statistics/statistics.component.html

@@ -1,17 +1,21 @@
 <app-application-page [elements$]="statistics" (reloadPage)="loadOverview($event)">
   <app-application-banner app-banner>
-    <div class="d-flex flex-column ms-5">
-      <button
-        routerLink="/"
-        class="px-2 dialog-detail-button"
-        color="primary"
-        disableRipple="true"
-        mat-button
-        queryParamsHandling="preserve"
-        [attr.data-testId]="'show-all-checkins'"
-      >Zurück zur Übersicht
-      </button>
-      <h1> Auswertung </h1>
+    <div class="container-fluid">
+      <div class="row first-line">
+        <div class="col-12">
+          <a
+            [attr.data-testId]="'routerLink-to-overview'"
+            routerLink="/"
+            queryParamsHandling="preserve"
+          >Zurück zur OKR Übersicht</a
+          >
+        </div>
+      </div>
+      <div class="row second-line">
+        <div>
+          <h1>Auswertung</h1>
+        </div>
+      </div>
     </div>
   </app-application-banner>
   <div class="container-fluid ms-1">

frontend/src/app/statistics/statistics.component.scss

@@ -0,0 +1,23 @@
+.first-line {
+  padding-top: 2rem;
+
+  > div:first-child {
+    padding-left: 2rem;
+  }
+}
+
+.second-line {
+  > div {
+    display: flex;
+    align-items: flex-end;
+    padding-top: 1.275rem;
+  }
+
+  div:first-child {
+    padding-left: 2rem;
+  }
+
+  h1 {
+    margin: 0;
+  }
+}

frontend/src/app/statistics/statistics.component.ts

@@ -7,7 +7,8 @@ import { FilterPageChange } from '../shared/types/model/filter-page-change';
 @Component({
   selector: 'app-statistics',
   standalone: false,
-  templateUrl: './statistics.component.html'
+  templateUrl: './statistics.component.html',
+  styleUrl: './statistics.component.scss'
 })
 export class StatisticsComponent {
   private evaluationService = inject(EvaluationService);