.video-item {
	margin-bottom:40px;
}
.video-content {
	position: relative;
	padding-bottom: 56.25%; /* 16:9 aspect ratio */
	height: 0;
	overflow: hidden;
	border:1px solid #ccc;
}
.video-content iframe {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
}