" color="primary"></ion-back-button>
        </p>

        <ion-toolbar>
          <ion-buttons slot="start">
            <ion-back-button></ion-back-button>
            <ion-back-button class="ion-focused"></ion-back-button>
          </ion-buttons>
          <ion-title>Default</ion-title>
        </ion-toolbar>

        <ion-toolbar color="primary">
          <ion-buttons slot="start">
            <ion-back-button></ion-back-button>
            <ion-back-button class="ion-focused"></ion-back-button>
     