div#game_container {
	position: relative;	
	float: left;
	background: #E9A5BA;
	margin:0px auto;	
	-webkit-backface-visibility: hidden;
	backface-visibility: hidden;	
	-webkit-transform: perspective( 600px ) rotateY( 0deg );
	transform: perspective( 600px ) rotateY( 0deg );		
}

div#game_board {
    position: absolute;
	-webkit-backface-visibility: hidden;
	backface-visibility: hidden;	
	-webkit-transform: perspective( 600px ) rotateY( 0deg );
	transform: perspective( 600px ) rotateY( 0deg );	
	transition: -webkit-transform .2s linear 0s;
	transition: transform .5s linear 0s;		
	z-index: 1;
}

div#game_board_toplist {
	position: absolute;
	-webkit-backface-visibility: hidden;
	backface-visibility: hidden;	
	-webkit-transform: perspective( 600px ) rotateY( 180deg );
	transform: perspective( 600px ) rotateY( 180deg );	
	transition: -webkit-transform .2s linear 0s;
	transition: transform .5s linear 0s;		
	
	background: #E9A5BA;
	font-family: Verdana;	
	width: 520px;
	height: 520px;
	margin:0px auto;
	padding: 10px;
	z-index: 2;
}

.current_time {
	font-weight: bold;
}

div#memory_board{
	background: #E9A5BA;
	border: none;
	padding: 10px;
	margin:0px auto;
	-webkit-backface-visibility: hidden;
	backface-visibility: hidden;		
}

div#timer{
	background: #E9A5BA;
	border: none;
	padding: 5px;
	margin:0px auto;
	text-align: center;
	font-size: 14px;
	font-weight: bold;
	font-family: Verdana;
}

.tile{
    perspective: 1000px;
    -webkit-perspective: 1000px; 	
	position: relative;
	float:left;
	width: 83px;
	height: 83px;
	margin: 0px; 
	padding: 0px; 
	font-size:64px;
	cursor:pointer;
	text-align:center;
}


.tile .front{
	background: url(tiles_neu/tile_bg.png) 	repeat;	
	background-size: cover;
	width:  53px;
	height: 53px;
	margin: 10px; 
	padding: 10px; 	
	border:#000 1px solid; 			
	border-radius: 7px;
	position: absolute;
	-webkit-transform: perspective( 600px ) rotateY( 0deg );
	transform: perspective( 600px ) rotateY( 0deg );
	-webkit-backface-visibility: hidden;
	backface-visibility: hidden;
	transition: -webkit-transform .5s linear 0s;
	transition: transform .5s linear 0s;			
}

.tile .back{
	background: #FFF;
	width:  53px;
	height: 53px;
	margin: 10px; 
	padding: 10px; 	
	border:#000 1px solid; 			
	border-radius: 7px;
	position: absolute;
	-webkit-transform: perspective( 600px ) rotateY( 180deg );
	transform: perspective( 600px ) rotateY( 180deg );
	-webkit-backface-visibility: hidden;
	backface-visibility: hidden;
	transition: -webkit-transform .5s linear 0s;
	transition: transform .5s linear 0s;		
}

<!-- img { width: 100%; height:100%} -->