bootstrap для класса тегов показывает нормальные HTML без плоскости CSS эффекты

Question

    <div class="page-area">
      <h2>Home</h2>
        <div class="box">
            <h1>User name is <span class="text-success">{{userName}}</span></h1>
        </div>
        <div class="row">
          <div class="col-md-6">
              <app-comp2></app-comp2>
           </div>
        </div>
    </div>



import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';

import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { Comp2Component } from './comp2/comp2.component';

@NgModule({
  declarations: [
    AppComponent,
    Comp2Component
  ],
  imports: [
    BrowserModule,
    AppRoutingModule,
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

bootstrap для класса тегов показывает нормально HTML без плоскости CSS эффекты

Я новичок в angular, работающем над bootstrap для тега. Я использовал предопределенный класс, но не работал, но вывод, который показывает, не должен влиять на него

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              "src/styles.css"
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                },
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          "builder": "@angular-devkit/build-angular:protractor",
          "options": {
            "protractorConfig": "e2e/protractor.conf.js",
            "devServerTarget": "egg:serve"
          },
          "configurations": {
            "production": {
              "devServerTarget": "egg:serve:production"
            }
          }
        }
      }
    }
  },
  "defaultProject": "egg"
}

angular. json