title: Can I use /deep/ with Angular 7, will it not be a problem in a future update?
body: <p>In my Angular 7.2.0 component I am using a <a href="https://www.devexpress.com/" rel="nofollow noreferrer">https://www.devexpress.com/</a> component. I am not able to override the CSS with the component's CSS file unless I use the <code>/deep/</code> flag. For example:</p>
  
  <pre><code>/deep/ .dx-editor-cell .dx-texteditor .dx-texteditor-input {
      background: blue;
  }
  </code></pre>
  
  <p>Is this correct approach? If I update to Angular 8 will there be a problem? Or is there any other correct way to do it?</p>