.about_banner{
	width: 100%;
	overflow: hidden;
}
.about_banner img{
	width: 100%;
}
.about_qualification{
	width: 100%;
	overflow: hidden;
	padding-bottom: 52px;
	font-size: 14px;
	color: #757575;
	line-height: 25px;
}
.about_title{
	width: 705px;
	padding: 55px 0 15px;
	margin: 0 auto;
	text-align: center;
	color: #909090;
	font-size: 14px;
	line-height: 20px;
}
.about_title h1{
	font-size: 40px;
	color: #000;
	margin-bottom: 25px;
}

/*荣誉资质*/
.about_qualification ul{
	padding-top: 10px;
	overflow: hidden;
}
.about_qualification li .honor_img{
	width: 100%;
	overflow: hidden;
	position: relative;
}
.honor_img>img{
	width: 100%;
}
.honor_mask img{
	display: none;
	position: absolute;
	left: 50%;
	top: 50%;
	margin: -25px 0 0 -25px;
}
.honor_mask:hover{
	background-color: rgba(0,0,0,0);
	text-align: center;
}
.honor_mask:hover p{
	display: none;
}
.honor_mask:hover img{
	display: block;
}
@media only screen and (min-width: 300px) {
	.about_title{
		width: 90%;
		padding: 55px 0 0px;
		margin: 0 auto;
		text-align: center;
		color: #909090;
		font-size: 14px;
		line-height: 20px;
	}
	.about_title h1{
		font-size: 30px;
		color: #000;
		margin-bottom: 25px;
	}
	.about_qualification li:nth-of-type(2n+1){
		margin-top: 30px;
		padding-right: 15px;
	}
	.about_qualification li:nth-of-type(2n){
		margin-top: 30px;
		padding-left: 15px;
	}
	.honor_mask{
		width: 100%;
		height: 100%;
		position: absolute;
		top: 0;
		left: 0;
		cursor: pointer;
		background-color: rgba(0,0,0,0.7);
		color: #e5e5e5;
		font-size: 16px;
		line-height: 20px;
		padding-top: 85px;
		z-index: 10;
		text-align: center;
		transition: all 0.5s;
	}
	.about_qualification li .honor_img{
		width: 100%;
		height: 216.7px;
		line-height: 216.7px;
		overflow: hidden;
		position: relative;
	}
}
@media only screen and (min-width: 768px) {
	.about_qualification li:nth-of-type(3n+1){
		padding: 0;
		margin-top: 40px;
		padding-right: 20px;
	}
	.about_qualification li:nth-of-type(3n+2){
		padding: 0;
		margin-top: 40px;
		padding-left: 10px;
		padding-right: 10px;
	}
	.about_qualification li:nth-of-type(3n){
		padding: 0;
		margin-top: 40px;
		padding-left: 20px;
	}
	.honor_mask{
		width: 100%;
		height: 100%;
		position: absolute;
		top: 0;
		left: 0;
		cursor: pointer;
		background-color: rgba(0,0,0,0.7);
		color: #e5e5e5;
		font-size: 16px;
		line-height: 20px;
		padding-top: 125px;
		z-index: 10;
		text-align: center;
		transition: all 0.5s;
	}
	.about_qualification li .honor_img{
		width: 100%;
		height: 310.97px;
		line-height: 310.97px;
		overflow: hidden;
		position: relative;
	}
}
@media only screen and (min-width: 992px) {
	.about_qualification li:nth-of-type(4n+1){
		padding: 0;
		margin-top: 30px;
		padding-right: 30px;
	}
	.about_qualification li:nth-of-type(4n+2){
		padding: 0;
		margin-top: 30px;
		padding-left: 10px;
		padding-right: 20px;
	}
	.about_qualification li:nth-of-type(4n-1){
		padding: 0;
		margin-top: 30px;
		padding-left: 20px;
		padding-right: 10px;
	}
	
	.about_qualification li:nth-of-type(4n){
		padding: 0;
		margin-top: 30px;
		padding-left: 30px;
	}
	.honor_mask{
		width: 100%;
		height: 100%;
		position: absolute;
		top: 0;
		left: 0;
		cursor: pointer;
		background-color: rgba(0,0,0,0.7);
		color: #e5e5e5;
		font-size: 16px;
		line-height: 20px;
		padding-top: 115px;
		z-index: 10;
		text-align: center;
		transition: all 0.5s;
	}
	.about_qualification li .honor_img{
		width: 100%;
		height: 292.39px;
		line-height: 292.39px;
		overflow: hidden;
		position: relative;
	}
}
@media only screen and (min-width: 1200px) {
	.honor_mask{
		width: 100%;
		height: 100%;
		position: absolute;
		top: 0;
		left: 0;
		cursor: pointer;
		background-color: rgba(0,0,0,0.7);
		color: #e5e5e5;
		font-size: 16px;
		line-height: 20px;
		padding-top: 155px;
		z-index: 10;
		text-align: center;
		transition: all 0.5s;
	}
	.about_qualification li .honor_img{
		width: 100%;
		height: 371.52px;
		line-height: 371.52px;
		overflow: hidden;
		position: relative;
	}
}