.slider_ul {
	width: 600px;
	height: 361px;
	position: relative;
	z-index: 2;
	margin: 5px auto;
}

.slider_p {
	background: rgba(0, 0, 0, 0.7);
	text-align: center;
	height: 105px;
	padding-top: 5px;
	font-weight: bold;
	border: 3px solid black;
	color: #fff;
	line-height: 16px;
}

.slider_li {
}

.slider_img {
	border: 3px solid black;
}

#circle_box {
	position: absolute;
	top: 455px;
	right: 160px;
}

.circle_image {
	width: 20px;
	height: 20px;
	margin-right: 2px;
	z-index: 1;
}

#forward_box {
	display: none;
	position: absolute;
	top: 220px;
	right: 5px;
}

#back_box {
	display: none;
	position: absolute;
	top: 220px;
	left: 10px;
	transform: rotate(180deg);
}

.slider_ul:hover #forward_box, .slider_ul:hover #back_box {
	display: block;
}

.ff_back_image {
	width: 40px;
	height: 40px;
	z-index: 1;
}