Installing the Angular Material Indigo Pink Theme on Stackblitz? : <p>Normally we could just add the theme to <code>styles.css</code> and it would work.  <a href="https://stackblitz.com/edit/angular-mat-stepper-demo?file=src%2Fstyles.css" rel="nofollow noreferrer">For example I have this Stackblitz where it works</a>;</p>

<p><a href="https://stackblitz.com/edit/angular-minimal-material-table-demo?file=src/app/app.module.ts" rel="nofollow noreferrer">However now Stackblitz complains that it can't find the core theme</a>.</p>

<p>Thoughts?</p>
