<style type="text/css">.embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
</style>
<div class="embed-container"><iframe allowfullscreen="" frameborder="0" src="https://www.youtube.com/embed//SDm7n82RHnI"></iframe></div>