.box_layer_bottom{
	display:block;
}

.box_layer_top{
	opacity:0;
	position:absolute;
	top:0;
	right:0;
	bottom:0;
	left:0;
	width:100%;
	height:100%;
	background:rgba(0,0,0,0.6);
	color:#fff;
	cursor:pointer;
	transition:all 0.4s ease-in-out 0s;
	-webkit-transition:all 0.4s ease-in-out 0s;
	-ms-transition:all 0.4s ease-in-out 0s;
	-moz-transition:all 0.4s ease-in-out 0s;
}

.box:hover .box_layer_top,
.box:active .box_layer_top{
	opacity:1;
}

.box .box_text{
	text-align:center;
	font-size:18px;
	display:inline-block;
	position:absolute;
	top:50%;
	left:50%;
	transform:translate(-50%,-50%);
	-webkit-transform:translate(-50%,-50%);
	-ms-transform:translate(-50%,-50%);
	-moz-transform:translate(-50%,-50%);
}