n:</label>
  <mat-slider min="0" max="24">
    <input matSliderThumb [(ngModel)]="elevation" />
  </mat-slider>
</section>

<mtx-alert
  [type]="type"
  [dismissible]="dismissible"
  [elevation]="elevation"
  (closed)="onClosed($event)"
>
  <strong>Heads up!</strong>
  This alert needs your attention, but it's not super important.
</mtx-alert>

<mtx-alert
  type="info"
  [dismissible]="dismissible"
  [elevation]="elevation"
  (closed)="onClosed($event)"
>
  <strong>Heads up!</strong>
  This alert needs your