.container {
	width: 100%;
	height: 100%;
	padding: 0;
	position: absolute;
	background-color: black;
	z-index:-3;
	text-align: center;
}

.row {
	margin-right:0px;
	margin-left:0px;
}

#game-board {
	height: auto;
	width: 399px;
	background-color: Ivory;
	margin: auto;
	position: relative;
	top: 40px;
	text-align: center;
	color: DimGray;
	z-index:-2;
}

.game-square {
	height: 133px;
	width: 133px;
	border: 2px solid Black;
	margin:auto;
	z-index:1;
}

.game-square h1 {
	font-size: 7em;
}

.overlay {
	background-color: rgba(233, 233, 233, 0.5);
	display: none;
	position: absolute;
	top: 0;
	left: 0;
	bottom: 0;
	right: 0;
	z-index:2;
}

#choose-xo {
	background-color: black;
	position: relative;
	margin: auto;
	margin-top: 100px;
	padding: 100px;
	text-align: center;
	color: Ivory;
	width: 400px;
	z-index:3;
}

#choose-xo h1 {
	font-size: 6em;
}

#select-x {
	cursor: pointer;
}

#select-o {
	cursor: pointer;
}

.taken {
	cursor: not-allowed;
}

.not-taken {
	cursor: pointer;
}

@media (min-width:800px) {
	.container {
		padding: 100px;		
	}
	#game-board {
		top: 0;
	}
}

@media (min-width: 600px) {
	#game-board {
		width: 600px;
	}
	
	.game-square {
		height: 200px;
		width: 200px;
	}
	
	.game-square h1 {
		font-size: 11em;
	}
	
	#choose-xo {
		margin-top: 200px;
	}
}