clr-angular-static-fix/button/button-group/button-group.html

1. Install Clarity Icons package through npm:

<!--
  ~ Copyright (c) 2016-2018 VMware, Inc. All Rights Reserved.
  ~ This software is released under MIT license.
  ~ The full license information can be found in LICENSE in the root directory of this project.
  -->

<ng-container *ngFor="let inlineButton of inlineButtons">
    <ng-template [ngTemplateOutlet]="inlineButton.templateRef"></ng-template>
</ng-container>
<ng-container *ngIf="menuButtons.length > 0">
    <div
        class="btn-group-overflow open"
        [ngClass]="menuPosition"
        #anchor>
        <button
            class="btn dropdown-toggle"
            (click)="toggleMenu()">
            <clr-icon shape="ellipsis-horizontal"></clr-icon>
        </button>
        <div
            class="dropdown-menu"
            *clrPopoverOld="openMenu; anchor: anchor; anchorPoint: anchorPoint; popoverPoint: popoverPoint;">
            <ng-template [ngTemplateOutlet]="ref"></ng-template>
        </div>
    </div>
</ng-container>
<ng-template #ref>
    <ng-container *ngFor="let menuButton of menuButtons">
        <ng-template [ngTemplateOutlet]="menuButton.templateRef"></ng-template>
    </ng-container>
</ng-template>