.embed-responsive {
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box;
	position: relative;
	display: block;
	height: 0;
	padding: 0;
}
.embed-responsive .embed-responsive-item,
.embed-responsive iframe,
.embed-responsive embed,
.embed-responsive object,
.embed-responsive video {
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box;
	position: absolute;
	top: 0;
	left: 0;
	bottom: 0;
	height: 100%;
	width: 100%;
}
.embed-responsive-16by9 {
	padding-bottom: 56.25%;
}
.embed-responsive-4by3 {
	padding-bottom: 75%;
}