app.component.html

<div class="app">

    <div class="app-header">
        <app-header></app-header>
    </div>

    <div class="app-content">
        <router-outlet></router-outlet>
    </div>

    <!-- cookie information banner -->
    <div class="cookie-banner" *ngIf="showCookieBanner">
        <p class="note">
            This web-application uses cookies to provide you with a greater user experience. By using the application you
            accept our <span class="link" (click)="goToCookiePolicy()">use of cookies</span>.
        </p>
        <div class="action">
            <button mat-flat-button color="accent" (click)="closeCookieBanner()">
                ACCEPT
            </button>
        </div>
    </div>
</div>