.openbtn {
	background-image: url("/image/so_btn_sp_o.png");
	width: 50px;
	height: 50px;
	background-size: 100%;
	border-radius: 0px;
}

.closebtn {
	background-image: url("/image/so_btn_sp_c.png");
	width: 50px;
	height: 50px;
	background-size: 100%;
	border-radius: 0px;
}