.tiyan {
	width: 100%;
	padding-top: 80px;
	padding-bottom: 120px;
	background-color: #f7f7f7;
}

.guan {
	width: 950px;
}

.guan h1 {
	font-size: 36px;
	font-weight: bold;
	color: #1A1A1A;
	padding-bottom: 40px;
}

.guan p {
	font-size: 16px;
	font-weight: 400;
	color: #333333;
	line-height: 30px;
	padding-bottom: 20px;
}

.yu {
	display: flex;
	justify-content: space-between;
	width: 1000PX;
	padding-bottom: 70px;
}

.yu1 img:nth-child(1) {
	width: 413px;
	height: 302px;
	object-fit: cover;
	margin-bottom: 20PX;
}

.yu1 img:nth-child(2) {
	width: 413px;
	height: 464px;
	object-fit: cover;
}

.yu2 img:nth-child(1) {
	width: 534px;
	height: 464px;
	object-fit: cover;
	margin-bottom: 20PX;
}

.yu2 img:nth-child(2) {
	width: 534px;
	height: 302px;
	object-fit: cover;
}
.guan h3{
    padding-bottom: 20px;
}
@media screen and (max-width:1024px) {
	.yu1 img:nth-child(1) {
		width: 100%;
	}

	.yu1 img:nth-child(2) {
		width: 100%;
	}

	.yu2 img {
		width: 100% !important;
	}

	.guan {
		width: 100%;
	}

	.yu {
		width: 100%;
	}

	.yu1 {
		width: 48%;
	}

	.yu2 {
		width: 50%;
	}
}

@media screen and (max-width:768px) {
	.yu1 img:nth-child(1) {
		width: 100%;
		height: 137px;
	}

	.yu1 img:nth-child(2) {
		width: 100%;
		height: 200px;
	}

	.yu2 img:nth-child(1) {
		height: 200px;
	}

	.yu2 img:nth-child(2) {
		height: 137px;
		object-fit: cover;
	}

	.tiyan {
		width: 100%;
		padding-top: 28px;
		padding-bottom: 90px;
		background-color: #f7f7f7;
	}

	.guan h1 {
		font-size: 25px;
		font-weight: bold;
		color: #1A1A1A;
		padding-bottom: 20px;
	}
}