.google-map {
	height: 100%;
	width: 100%;
	position: relative;
	-webkit-filter: grayscale(100%);
	filter: grayscale(100%);
}
.google-map iframe {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	border: 0;
}