title: PrimeNg is not working with .scss file
body: <p>I have tried to setup PrimeNg in to my Angular-CLI project. So I followed the steps like<br><br>
  <code>npm install primeng --save
  npm install primeui --save</code></p>
  
  <p>I need a drop down, so I have added<br><br> <code>import { DropdownModule } from 'primeng/primeng';</code> in to my main module.ts file followed by <code>imports:[DropdownModule]</code>. <br><br>
  Then styles added in to the .angular-cli.json file like <br><br><code>"../node_modules/primeng/resources/themes/omega/theme.scss",
          "../node_modules/primeng/resources/primeng.min.scss"</code>. <br><br>I used <strong>.SCSS</strong> file for styling. I have added dropdown in to my html <br><br>
  <code>&lt;p-dropdown [options]="cities1" [(ngModel)]="selectedCity1"&gt;&lt;/p-dropdown&gt;</code><br><br>
  My issue is style is not reflected into the page and showing the following error when I click on the drop down. </p>
  
  <blockquote>
    <p>ERROR TypeError: Cannot read property 'style' of undefined</p>
  </blockquote>