HTML How to embed youtube video in responsive ration and full-width

[adesk]

CSS :
.videoWrapper {
position: relative;
padding-bottom: 56.25%;
padding-top: 25px;
height: 0;
}
.videoWrapper iframe {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
}

HTML :
<div class="videoWrapper">
<!-- Copy & Pasted from YouTube -->
<iframe width="560" height="349" src="

" frameborder="0" allowfullscreen></iframe>
</div>