html, body {
	overflow: hidden; 
	margin: 0 0 0 0;
	padding: 0 0 0 0;
	background-color: #cccccc;
	width: 100%;
	height: 100%;
}


#game_container {
	position:absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%,-50%);
		-webkit-transform:translate(-50%,-50%);
		-ms-transform:translate(-50%,-50%);
		-o-transform:translate(-50%,-50%);

}