* {
	margin: 0;
	padding: 0;
	list-style: none;
	text-decoration: none;
}

body::-webkit-scrollbar {
	display: none !important;
}

body {
	-ms-overflow-style: none;
	overflow: -moz-scrollbars-none;
	scrollbar-width: none;
}

#ldbigdata {
	text-align: center;
	min-height: 100vh;
	margin: 0 auto;
	background: white;
}

/* ************** */
#ld-one {
	height: 800px;
	background-image: url(../img/ld-carousel-active01.jpg);
	background-size: 100% 100%;
}

.top {
	z-index: 3;
	position: relative;
	top: 25px;
	left: 25px;
	width: 170px;
	height: 170px;
	float: left;

}


/* ----------------- */
.lunbo {
	position: absolute;
	height: 800px;
	width: 100%;
}

.content {
	height: 800px;
	position: relative;
}

#item {
	width: 100%;
	height: 100%;

}

.item {
	position: absolute;
	opacity: 0;
	transition: all 1s;
	object-fit: cover;

}

.item.active {
	opacity: 1;
}

img {
	max-width: 100%;
	height: auto;
}

#btn-left {
	width: 30px;
	height: 69px;
	font-size: 30px;
	color: white;
	background-color: rgba(0, 0, 0, 0.4);
	line-height: 69px;
	padding-left: 5px;
	z-index: 10;
	position: absolute;
	left: 0;
	top: 50%;
	transform: translateY(-60%);
	cursor: pointer;
	opacity: 0;
}

.lunbo:hover #btn-left {
	opacity: 1;
}

#btn-right {
	width: 26px;
	height: 69px;
	font-size: 30px;
	color: white;
	background-color: rgba(0, 0, 0, 0.4);
	line-height: 69px;
	padding-left: 5px;
	z-index: 10;
	position: absolute;
	right: 0;
	top: 50%;
	cursor: pointer;
	opacity: 0;
	transform: translateY(-60%);
}

.lunbo:hover #btn-right {
	opacity: 1;
}

#circle {
	height: 50px;
	display: flex;
	position: absolute;
	bottom: 35px;
	left: 200px;
}

.circle {

	width: 100px;
	height: 50px;
	border: 2px solid white;
	background: rgba(0, 0, 0, 0.4);
	cursor: pointer;
	margin: 5px;
}

.orange {
	border: 3px solid #e16531;
}


/* ----------------- */

/* ************** */
#ld-two {
	margin-top: 0px;
	height: 1080px;
	background: white;
	background-image: url(../img/ld-two.png);
	background-size: 100% 100%;
}

/* ************** */
#ld-three {
	height: 1080px;
	background: pink;
	background-image: url(../img/ld-three.png);
	background-size: 100% 100%;
}

/* ************** */
#ld-four {
	height: 472.5px;
	background: #141C2E;
	color: white;
	text-align: left;
}

#ld-four a {
	color: white;
	text-decoration: none;
}

/* ************** */
#ld-five {
	width: 50px;
	height: 50px;
	background: red;
	position: fixed;
	bottom: 0;
	right: 0;
	color: white;
}
.ld-four-left li img{
	width: 20px;
	height: 20px;
	margin-right: 10px;
}
.ld-four-left li{
	margin-top: 10px;
}
#ld-four a {
	color: white;
	text-decoration: none;
}

#ld-four .ld-four-title{
	font-size: 20px;
	font-weight: bold;
}