* {
	-webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}
#sachovnice {
	width: 400px;
	height: 400px;
	border: 1px solid black;
	margin: 0 auto;
}

.pole {
	width: 50px;
	height: 50px;
	float: left;
	line-height: 50px;
	font-size: 50px;
	text-align: center;
}

.cerna {
	background-color: black;
}

/*span.posouvane {
	text-shadow: 0 0 3px white;
}

.cerna span.posouvane {
	text-shadow: 0 0 3px black;
}*/

.cerni {
	color: black;
	text-shadow: 2px 2px 2px white,
		-2px -2px 2px white,
		-2px 2px 2px white,
		2px -2px 2px white
	;
}

.bili {
	color: white;
	text-shadow: 2px 2px 2px black,
		-2px -2px 2px black,
		-2px 2px 2px black,
		2px -2px 2px black
	;
}