css: Responsive embeded videos

rwd_embeded_videos.css

/* wrap <iframe> in a div */
.responsive-video {
	position: relative;
	padding-bottom: 56.25%; /* 16/9 ratio */
	padding-top: 30px; /* IE6 workaround*/
	height: 0;
	overflow: hidden;
}
.responsive-video iframe,
.responsive-video object,
.responsive-video embed {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
}