.slider_area li{
	width:20%;
	position:relative;
	cursor:pointer;
}
.slider_area p{
	display:block;
	width:100%;height:100%;
	background:url(../images/facs/overBG.png);
	visibility:hidden;
	opacity:0;
	transition:opacity .5s;
}
.slider_area li:hover p{
	visibility:visible;
	opacity:1;
}
.slider_area img{
	position:absolute;z-index:5;
	left:0;right:0;top:0;bottom:0;margin:auto;
}
.slider_area .title{
	width:100%;
}
.slider_area .plus{
	top:20%;width:8%;
	visibility:hidden;
	opacity:0;
	transition:opacity .5s, top .5s;
}
.slider_area li:hover .plus{
	top:30%;
	visibility:visible;
	opacity:1;
}