div#videocontainer{
	display: flex;
	flex-flow: row wrap;
	justify-content: center;
	align-items: center;
}
iframe.video{
	display: inline-block;
	width: 640px;
	height: 400px;
	margin: 5px;
}
@media(max-width: 655px){
	iframe.video{
		width: 340px;
		height: 210px;
	}
}