Separating Angular Material cards vertically

.component.html

<ng-container *ngIf="titles?.length; else noTitle">
    <mat-card class="my-class-name asd cardPardding" *ngFor="let title of titles">
        <p>
            {{title}}
        </p>
    </mat-card>
</ng-container>

<ng-template #noTitle>
    <mat-card class="asd cardPardding">
        <p>
            No title !
        </p>
    </mat-card>
</ng-template>

.css/.scss file

.my-class-name{
    margin-bottom: 10px;
    ... 
}