igniteui-angular-sovn/src/lib/drop-down/drop-down.component.html

Ignite UI for Angular is a dependency-free Angular toolkit for building modern web apps

<div class="igx-drop-down__list" [style.width]="width"
    igxToggle
    (appended)="onToggleContentAppended($event)"
    (opening)="onToggleOpening($event)" (opened)="onToggleOpened()"
    (closing)="onToggleClosing($event)" (closed)="onToggleClosed()">
    <div class="igx-drop-down__list-scroll" #scrollContainer [attr.id]="this.listId" role="listbox" [attr.aria-labelledby]="this.labelledBy"
    [style.height]="height"
    [style.maxHeight]="maxHeight">
        <ng-container *ngIf="!collapsed">
            <ng-content></ng-content>
        </ng-container>
    </div>
</div>