ng2-encrm-components/components/dropdown/button-dropdown.component.html

angular 2 components

<div id="container" [ngClass]="{'open': isOpen}">
  <div id="wrap" [ngClass]="{'active': isOpen}" (click)="toggleShow($event)" tabindex="0">
    <ng-content select=[content]></ng-content>
  </div>
  <div class="menu" [ngClass]="{'open': isOpen, 'active': isOpen }" #menu>
    <ng-content select=[list]></ng-content>
    <div class="arrow-container">
      <div class="arrow-inner"></div>
      <div class="arrow-border"></div>
    </div>
  </div>
</div>