Скрыть угловой элемент на кнопке нажмите
<button (click)="isShowInfo = !isShowInfo">Toggle me</button>
<div *ngIf="isShowInfo">
<p>Here is my info</p>
</div>
Frail Fly
<button (click)="isShowInfo = !isShowInfo">Toggle me</button>
<div *ngIf="isShowInfo">
<p>Here is my info</p>
</div>