
.banner{
	width: 100%;
	height: 270px;
	background: url(../images/aboutUs-bg.jpg) no-repeat;
	background-size:100% 100% ;
	text-align: center;
	box-sizing: border-box;
	display: flex;
	align-items: center;
	justify-content: center;
}
.banner h4{
	font-size: 45px;color: #333;
	font-weight: 100;
	margin-bottom: 25px;
}
.banner h5{
	font-size: 19px;color: #666;
}

.navigate{
	width: 100%;
	height: 86px;
	border-bottom: 1px solid #e6e6e6;
	line-height: 86px;
	padding:0 3%;
	box-sizing: border-box;
	color: #b2b2b2;
}
.navigate .left{
	float: left;
	font-size: 16px;
}
.navigate .right{
	float: right;
	font-size: 20px
}
.main{
	width: 100%;
	box-sizing: border-box;
	text-align: center;
	padding: 5% 5% 10% 6%;
}
.main h5{
	font-size: 29px;
	color: #000;
}
.main h6{
	font-size: 26px;
	color: #999;
	margin: 10px 0 80px 0;
	font-weight: 100;
}
.main .smallNav{
	width: 100%;
	overflow: hidden;
	margin-bottom: 50px;
}
.main .smallNav ul li{
	float: left;
	margin-right: 5px;
}
.main .smallNav ul li a{
	display: block;
	padding: 0 13px;
	line-height: 46px;
	color: #9f9f9f;
}
.main .smallNav ul li a.on{
	border-bottom: 4px solid #3184fb;
	color: #65a3fc;
}
.main .center ul{
	overflow: hidden;
	box-sizing: border-box;
	padding: 10px ;
}
.main .center ul li{
	float: left;
	width: 23%;
	height: 33vw;
	border: 1px solid #e9e9e9;
	cursor: pointer;
	margin-right: 1%;
	margin-bottom: 1%;
}
.main .center ul li:nth-child(4n){
	margin-right: 0;
}
.main .center ul li:hover{
	box-shadow: 0 0 30px #ededed 
}
.main .center ul li .pic{
	width: 100%;
	height: 80%;
	box-sizing: border-box;
	display: flex;
	justify-content: center;
	align-items: center;
	overflow: hidden;
}
.main .center ul li .pic img{
	width: 195px;
	height:277px;
	max-width: 70%;
	max-height: 70%;
	transition: all .5s;
}
.main .center ul li .pic img:hover{
	transform: scale(1.1);
}



@media screen and (max-width: 1024px){
	.main{
		padding: 5% 0;
	}
	.main .center ul li{
		width: 24%;
		padding: 2vw;
		box-sizing: border-box;
	}

	.main .center ul li .pic{
		width: 100%;

		box-sizing: border-box;
		display: block;
		justify-content: center;
		align-items: center;
		overflow: hidden;
	}
	.main .center ul li .pic img{
		width: 100%;
		height: 100%;
		max-width: 100%;
		max-height: 100%;
		transition: all .5s;
	}

}
@media screen and (max-width: 900px){
	.main .center ul li{
		width: 48%;
		margin:  0.5%;
		height: 60vw;
		display: flex;
		flex-direction: column;
		align-items: center;
	}
	.main .center ul li .pic{
		width: 70%;
	}
}


@media screen and (max-width: 769px){
	.banner{
		height: 30vw;
	}
	.banner h4{
		font-size: 5vw;
		margin-bottom: 1vw;
	}
	.banner h5{
		font-size: 3vw
	}
	.navigate .right{
		display: none;
	}

}
@media screen and (max-width: 640px){
	.main .center ul li{
		width: 99%;
		margin:  0.5%;
		height: 60vw;
		display: flex;
		flex-direction: column;
		align-items: center;
	}
	.main .center ul li .pic{
		width: 40%;
	}
}














