title: ion-spinner not showing in the center of ion-avatar
body: <p>In my Ionic3 project, I am trying to display a spinner in the center of an image.
  Following are my HTML and SCSS files.</p>
  
  <blockquote>
    <p>HTML:</p>
  </blockquote>
  
  <pre><code>&lt;ion-item no-lines no-padding&gt;
    &lt;ion-avatar item-start no-margin&gt;
        &lt;img [src]="imgURL" (load)="loaded = true"/&gt;
        &lt;ion-spinner class="imgSpinner" *ngIf="loaded"&gt;&lt;/ion-spinner&gt;
    &lt;/ion-avatar&gt;
  &lt;ion-label no-margin&gt;{{name}}&lt;/ion-label&gt;
  &lt;/ion-item&gt;
  </code></pre>
  
  <blockquote>
    <p>SCSS:</p>
  </blockquote>
  
  <pre><code>  .imgSpinner{
        position: fixed;
        top: 0px;
        left: 0px;
        right: 0px;
        bottom: 0px;
        margin: auto;
        z-index: 9;
    }
  </code></pre>
  
  <p>The problem is <code>ion-spinner</code> is not considering <code>ion-avatar</code> as a parent. Instead, it is taking <code>ion-item</code> as the parent and showing in the center of it.
  Please help.</p>
  
  <p><a href="https://i.stack.imgur.com/q4OTl.gif" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/q4OTl.gif" alt="enter image description here"></a></p>