styles in angular component

1@Component({
2  selector: 'app-root',
3  template: `
4    <h1>Tour of Heroes</h1>
5    <app-hero-main [hero]="hero"></app-hero-main>
6  `,
7  styles: ['h1 { font-weight: normal; }']
8})
9export class HeroAppComponent {
10/* . . . */
11}