.info {
	margin: 20px auto;
	text-align: center;
	max-width: 600px;
}
.head {
	text-align: center;
	margin-top: 10px;
}

.arena {
	position: relative;
	width: 900px;
	height: 500px;
	background: #fafafa;
	border: #ffcccc 1px solid;
	margin: 0 auto 30px;
	color: #222;
}

.arena div {
	font-family: 'Courier new';
	font-size: 12px;
	position: absolute;
	background: #ffffff;
	border: 1px outset;
	padding: 1px 5px;
	cursor: default;
}