.space{
	min-width: 5%;
}
.top-nav{
	position: absolute;
	top: 0;
	display: flex;
	justify-content: flex-end;
	align-items: center;
	width: 98%;
	font-size: 22px;
	background-color: white;
	z-index: 1;
	background-color: transparent;
	color: white;
	@media screen and (max-width: 720px) {
		width: calc(100% - 120px);
	}
	@media screen and (min-width: 720px) {
		width: calc(100% - 20px);
		font-size: 16px;
	}
}
.top-nav-item{
	display: flex;
	align-items: center;
	width: 140px;
	height: 80px;
	text-align: center;
	@media screen and (min-width: 720px) {
		width: 100px;
		height: 60px;
	}
}
.login{
	width: 130px;
	height: 44px;
	background-color: rgba(0,26,73,0.38);
	border-radius: 42px;
	line-height: 44px;
}
.group0{
	margin-top: 80px;
}
.group1,.group2{
	margin-top: 35px;
}
.group0,.group1,.group2{
	display: flex;
	flex-direction: column;
	width: 100%;
	align-items: center;
	overflow: hidden;
}
.group-title{
	font-size: 30px;
	color: #303133;
}
.group0-imgs{
	padding: 45px 0;
	display: flex;
	justify-content: space-around;
}
.group0-img{
	border-radius: 12px;
	box-shadow: 0px 0px 16px 0px rgba(0,0,0,0.15);
	@media screen and (min-width: 720px) {
		width: 250px;
	}
}
.group1-imgs{
	margin-top: 45px;
	width: 70%;
	display: flex;
	justify-content: space-around;
}
.group1-imgs-item{
	display: flex;
	flex-direction: column;
}
.group1-img{
	margin-bottom: 20px;
}
.group2{
	margin-top: 100px;
}
.group2-imgs{
	padding: 45px 0;
	width: 80%;
	display: flex;
	justify-content: space-around;
}
.group2-imgs-item{
	display: flex;
	flex-direction: column;
	justify-content: center;
	padding: 20px;
	border-radius: 12px;
	box-shadow: 0px 0px 16px 0px rgba(0,0,0,0.15);
	@media screen and (min-width: 720px) {
		width: 15%;
	}
}
.group2-img{
	margin-bottom: 20px;
}
.group2-imgs-item-title1{
	margin-bottom: 12px;
	font-size: 20px;
	color: #303233;
	text-align: center;
}
.group2-imgs-item-title2{
	margin-bottom: 12px;
	font-size: 16px;
	color: #606266;
	text-align: center;
}
.banner{
	z-index: 0;
	width: 100%;
	aspect-ratio: 1920/690;
	background-size: 100% 100%;
	background-image: url("../img/index/Slice 19.png");
}
.botton-nav{
	margin-top: 25px;
	display: flex;
	flex-direction: column;
	justify-content: space-around;
	align-items: center;
	width: 100%;
	height: 177px;
	padding: 40px 0;
	box-sizing: border-box;
	background-color: #3E3E3E;
	font-size: 14px;
	color: white;
}