/*日吉　知的財産表彰*/
.btn_hover {
	position: relative;
	width: 400px;
	height: 330px;
	margin: 0 auto;
	display: block;
	border-radius: 12px;
	overflow: hidden;
	cursor: pointer;
}
.btn_hover img {
	position: absolute;
	top: 50%;
	left: 50%;
	-webkit-transform: translate(-50%, -50%);
	transform: translate(-50%, -50%);
	width: 100%;
	display: block;
	-webkit-transition: .4s ease-in-out;
	transition: .4s ease-in-out;
}
.btn_hover:hover img:nth-of-type(2) {
	opacity: 0;
}