#memory_board{
	background:#000;
	width:800px;
	height:540px;
	padding:24px;
	margin:50px auto;
}
#memory_board > div{
	background-image: url(../images/chest.png);
	background-size: 50px 50px;
	background-repeat:no-repeat;
	background-position:32px 32px;
	border:#2BCA30 1px solid;
	width:71px;
	height:71px;
	float:left;
	margin:10px;
	padding:20px;
	font-size:64px;
	cursor:pointer;
	text-align:center;
}

#gameover{
	display:none;
	position:absolute;
	width:400px;
	height:200px;
	background:rgba(0,0,0,.9);
	left:465px;
	top:480px;
	border-radius:20px;
}
#gameover p{
	color:#fff;
	font-weight:bold;
	text-align:center;
	width:400px;
}
#reset{
	cursor:pointer;
	width:100px;
	height:30px;
	background:#2BCA30;
	font-weight:bold;
	text-align:center;
	line-height:30px;
	border-radius:5px;
	margin:100px auto 0 auto;
}