<div class='container m-4'>
    <div class="row">
        <div class="col">
            <h1>ngIf</h1>
            <button class="btn btn-primary btn-block" (click)="mostrarOcular()">
                Mostrar / Ocultar
            </button>
            <div *ngIf="mostrarTarjeta" class="card border-secondary mb-5" style="width: 100%;">
                <div class="card-body">
                    <h4 class="card-title">{{ frase.autor }}</h4>
                    <p class="card-text">{{ frase.mensaje }}</p>
                </div>
            </div>
        </div>
        <div class="col">
            <h1>ngFor</h1>
            <ul class="list-group">
                <li *ngFor="let item of personas; let i = index" class="list-group-item d-flex justify-content-between align-items-center">
                    {{ i +1 }} - {{ item }}
                </li>
            </ul>
        </div>
    </div>
</div>