How do i make fullscreen a iframe video with button click event

Ionic Framework
1 
<ion-header [translucent]="true">
  <ion-toolbar>
    <ion-title> Expand Camera Demo </ion-title>
  </ion-toolbar>
</ion-header>

<ion-content [fullscreen]="true">

  <div id="container">
    <div class="expand-btn">
      <ion-button
        (click)="expand()"
        [color]="isExpand ? 'danger' : 'primary'"
        ><ion-icon name="expand-outline"></ion-icon></ion-button>
    </div>
    <iframe
      aria-controls
      src="https://live.mcloudcam.vn:5443/LiveApp/play.html?name=VavpIzXVZQOCwIYBTeGH&playOrder=webrtc&token=327253414984915193962451"
      frameborder="0"
    ></iframe>
  </div>
</ion-content>