Repsonsive Video embed

This is the standard CSS for making video embeds responsive.

The CSS

<style>
.video-container {
position: relative;
padding-bottom: 56.25%;
padding-top: 30px;
height: 0;
overflow: hidden;
}

.video-container iframe,
.video-container object,
.video-container embed {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
}
</style>

The iframe wrapper

<div class="video-container">
<iframe width="1280" height="720" src="https://www.youtube.com/embed/GY25hkrZyZA?rel=0&amp;showinfo=0" frameborder="0" allowfullscreen></iframe>
</div>