Originally from: http://webdesignerwall.com/tutorials/css-elastic-videos
.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%;
}
HTML USAGE: ;