title: Ionic Ion-Button icon-only
body: <p>I'm very new in Ionic2 or Ionic at all. I set up a new project and want to design a small menu at the bottom of the foot of my page. I didn't do anything else on this project and trying to imitate the steps of a tutorial video. but when I use the icon-only directive on a button the background of the button only becomes a bit smaller. The background doesn't disappear. </p>
  
  <pre><code>&lt;ion-content class="bg-image" padding&gt;
  &lt;/ion-content&gt;
  &lt;ion-footer&gt;
    &lt;ion-toolbar&gt;
      &lt;button ion-button icon-only&gt;
        &lt;ion-icon name="home"&gt;&lt;/ion-icon&gt;
      &lt;/button&gt;
      &lt;button ion-button icon-only&gt;
        &lt;ion-icon name="add"&gt;&lt;/ion-icon&gt;
      &lt;/button&gt;
    &lt;/ion-toolbar&gt;
  &lt;/ion-footer&gt;
  </code></pre>
  
  <p>Here's my code. I hope you can help me. </p>