<section><iframe id="ytplayer" type="text/html" width="800" height="500" src="https://www.youtube-nocookie.com/embed/{{content}}?rel=0&autoplay=1" frameborder="0"></iframe></section>
<section>
    <iframe id="ytplayer"
            width="800"
            height="500"
            type="text/html"
            src="https://www.youtube-nocookie.com/embed/{{content}}?rel=0"
            frameborder="0"></iframe>
</section>
Remove `?autoplay=1` from YouTube iframe src URL template.
Remove `?autoplay=1` from YouTube iframe src URL template.

- Indentation & reformatting.
