Change from attaching directly to body tag for app

src/app/app.component.ts

@@ -1,8 +1,7 @@
 import { Component } from '@angular/core';
 
 @Component({
-  // tslint:disable-next-line
-  selector: 'body',
+  selector: 'app-root',
   template: '<router-outlet></router-outlet>'
 })
 export class AppComponent { }