title: Can you specify the platform when running ionic serve?
body: <p>I just updated @ionic/cli to v6.3.0 and noticed that running <code>ionic serve</code> displays the app with the iOS version of default component styles. In prior versions, the Android styles were applied. <strong>Is there a way to specify which platform preview is served?</strong></p>
  
  <p>Maybe something like <code>ionic serve --platform android</code>? I don't see anything like that in the <a href="https://ionicframework.com/docs/cli/commands/serve" rel="nofollow noreferrer">documentation</a>.</p>
  
  <p>Related, but not what I'm looking for:</p>
  
  <ul>
  <li>I realize you can run <code>ionic serve --lab</code> to see side-by-side iOS/Android versions of the app. This method is sometimes useful, but also some drawbacks (mainly that you cannot resize the device to test different screen sizes).</li>
  <li>Changing <code>IonicModule.forRoot()</code> to <code>IonicModule.forRoot( { mode: 'md' } )</code> in <code>/src/app/app.module.ts</code> forces the Android platform styles, but this also forces the Android platform styles when you <em>build/compile for iOS</em>.</li>
  </ul>