title: HTML/CSS - Iframe fit screen
body: <p>I use the code below in order to display a youtube video. I set its size at 560 width and 315 height. Code works good but when I try to resize the window, the iframe/video doesn't resize but instead scrollbars appear. How can I make the iframe also resize so it always fits the width of the screen?</p>
  
  <pre><code>&lt;body&gt;
      &lt;iframe width="560" height="315" src="https://www.youtube.com/embed/a3ICNMQW7Ok?rel=0&amp;amp;showinfo=0" frameborder="0" allowfullscreen&gt;&lt;/iframe&gt;
  &lt;/body&gt;
  </code></pre>