title: How to set padding between mat-icon and button title
body: <pre class="lang-html prettyprint-override"><code>&lt;button mat-raised-button color="warn"&gt;
       &lt;mat-icon&gt;delete&lt;/mat-icon&gt;
       Remove Driver
  &lt;/button&gt;
  </code></pre>
  
  <p>How to add padding in between <code>mat-icon</code> and <code>button</code> title?</p>
  
  <p>I want to keep the button title in the middle of the button and keep the icon in the left corner.</p>