app.ts

@Component({
  selector: 'my-app',
  template: `
    <card>
     <h4 class="card-title">Special title treatment</h4>
      <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
      <a href="#" class="btn btn-primary">Go somewhere</a>
    </card>
    
  `,
})
export class App {
  body:string;
  constructor() {
    this.body = 'Body\'s popin';
  }
}