How to append content on body using angular2

I am trying to show popup on body not inside my-app.So how to show a popup on body using anular 2.I have tried but not working it is possible or not? https://stackblitz.com/edit/angular-t4yerr?file=src/app/app.component.ts

name:string;
constructor(private domService: ModalService) {
this.name = `Angular!`;
}

addToBody() {
this.domService.appendComponentToBody(DialogComponent);
}

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