Not getting started with angular material

[Rudy F]

Hi All, 

I am trying to start with angular material but I cannot have the form showing up as the demo. 

I copy pasted that code: 

https://material.angular.io/components/form-field/overview 

<div class="example-container">

 <mat-form-field appearance="fill">

   <mat-label>Input</mat-label>

   <input matInput>

 </mat-form-field>

 <br>

 <mat-form-field appearance="fill">

   <mat-label>Select</mat-label>

   <mat-select>

     <mat-option value="option">Option</mat-option>

   </mat-select>

 </mat-form-field>

 <br>

 <mat-form-field appearance="fill">

   <mat-label>Textarea</mat-label>

   <textarea matInput></textarea>

 </mat-form-field>

</div>

And imported  this into my app module

import {MatNativeDateModule} from '@angular/material/core';

import {MatFormFieldModule} from '@angular/material/form-field';

import {MatSelectModule} from '@angular/material/select';

import { BrowserAnimationsModule } from '@angular/platform-browser/animations';

import { FormsModule } from '@angular/forms'; But unfortunately I have a regular textarea showing with a regular input field without styling and a select field but which does not work.

anything missing here?

[Rudy F]