title: iframe position in center
body: <p>So I found this code for position content in the center, but my problem is that it's made for a container, do you know how to make this for iframe? Or do You know another code for that 
  Code:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-css lang-css prettyprint-override"><code>.center {
    margin: auto;
    width: 60%;
    border: 3px solid #73AD21;
    padding: 10px;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;div class="center"&gt;&lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>And this is code I need to place in.</p>
  
  <pre><code>&lt;iframe src="http://80.213.62.138:12/playbutton.html"&gt;&lt;/iframe&gt; 
  </code></pre>