and muted attributes.</p>
              <pre>&lt;div class="embed"&gt;
 &lt;iframe src="https://www.youtube.com/embed/XjJQBjWYDTs"&gt;
 &lt;/iframe&gt;
&lt;/div&gt;</pre>
              <p><code>.embed</code> (responsive)</p>
            </div>
            <!-- end .content-left -->
            <div class="content-left">
              <!-- <div class="embed"> = Responsive -->
              <div class="embed">
                <iframe src="https://www.youtube.com/embed/XjJQBjWYDTs" allowfullscreen></iframe>
  