.x3-embed-container {
	position: relative;
	padding-bottom: 56.25%;
	height: 0;
	overflow: hidden;
	max-width: 100%;
	height: auto;
}

.x3-embed-container iframe {
	border: 0;
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
}