.cg {
	width: 100%;
	background: #000;
}

.game-3x4 {
	position: relative;
	width: 100%;
	height: 0;
	padding-bottom: 125%;
	bottom: 0;
}

.game-3x4 iframe {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
}

@media (min-width: 768px) {
	.cg {
		padding: 0 15%;
	}
}