.pic_bl {
    width: 1128px;
    overflow: hidden;
    position: relative;
    height: 700px;
    margin: 0 auto;
}

.pic_bl ul {
	position: absolute;
	left: 0;
	top: 0;
	height: 700px;
	width: 100%;
}

.pic_bl ul li {
	float: left;
	border: 0px solid #c6c5c5;
	height: 700px;
	margin-right: 35px;
	width: auto;
}

.pic_bl ul li a {
    display: block;
}

.pic_bl ul li a img {
	height: 700px;
}
.section1 {
    position: relative;
}
.pic_bl .pic_l,.section1 .pic_l,.button .pic_l {
    display: block;
    position: absolute;
    left: 518px;
    /* top: 50%; */
    background: url(//www.vdaoxi.com/images/2022leftarrow.png) no-repeat;
    width: 65px;
    height: 65px;
    /* margin-top: -38px; */
    cursor: pointer;
}

.pic_bl .pic_r,.section1 .pic_r,.button .pic_r {
    display: block;
    position: absolute;
    right: 518px;
    /* top: 50%; */
    background: url(//www.vdaoxi.com/images/2022rightarrow.png) no-repeat;
    width: 65px;
    height: 65px;
    /* margin-top: -38px; */
    cursor: pointer;
}

.pic_bg {
    width: 10px;
    height: 278px;
    background: #cde7f3;
    position: absolute;
    right: 0;
    top: 0;
}