Video / iFrame responsive code

Need these styles

.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%;
}

Then in html in the article...

<div class="video-container">
<iframe src="/your video embed code" frameborder="0" width="560" height="315"></iframe>
</div>