title: Difference between :host::ng-deep .class and .class :host::ng-deep?
body: <p>What is the difference between the below two in scss,
  Give some examples in snippet.</p>
  
  <pre><code>:host::ng-deep .content-body {
  ...
  }
  </code></pre>
  
  <p>and </p>
  
  <pre><code>.content-body :host::ng-deep {
  ...
  }
  </code></pre>