.quality-content {
	width: 100%;
	overflow: hidden;
	padding: 45px 0 25px;
}
.quality-content .quality-menu {
	width: 455px;
	overflow: hidden;
	margin: 0 auto 50px;
}
.quality-menu a {
	display: block;
	width: 135px;
	height: 40px;
	line-height: 40px;
	overflow: hidden;
	float: left;
	text-align: center;
	font-size: 16px;
	background-color: #e9e9e9;
	color: #666666;
	cursor: pointer;
	border-radius: 4px;
}
.quality-menu a:nth-of-type(2) {
	margin: 0 25px;
}
.quality-menu a.active {
	background-color: #d80c18;
	color: #FFFFFF;
	font-weight: bold;
}
.quality-list {
	width: 100%;
	overflow: hidden;
}
.quality-list ul {
	width: 100%;
	overflow: hidden;
	display: none;
}
.quality-list ul.active {
	display: block;
}
.quality-list ul li {
	overflow: hidden;
	float: left;
	border: 1px solid #c6c6c6;
	text-align: center;
	cursor: pointer;
	transition: all 0.5s;
}
.quality-list ul li .list-img {
	width: 100%;
	overflow: hidden;
}
.list-img img {
	width: 100%;
    transition: all 0.5s;
}
.quality-list ul li h4 {
	width: 100%;
	height: 49px;
	line-height: 50px;
	overflow: hidden;
	white-space: nowrap;
	text-overflow: ellipsis;
	background-color: #f2f2f2;
	font-size: 16px;
	transition: all 0.5s;
}
.quality-list ul li:hover {
	border-color: #d80c18;
}
.quality-list ul li:hover h4 {
	background-color: #d80c18;
	color: #FFFFFF;
}
@media only screen and (max-width: 991px) {
	.quality-list ul li {
		width: calc(33.33% - 10px);
		width: -moz-calc(33.33% - 10px);
		width: -webkit-calc(33.33% - 10px);
	}
	.quality-list ul li:nth-of-type(3n+1),.quality-list ul li:nth-of-type(3n+2) {
		margin: 0 15px 20px 0;
	}
	.quality-list ul li:nth-of-type(3n) {
		margin: 0 0 20px;
	}
}
@media only screen and (max-width: 700px) {
	.quality-content .quality-menu {
	    width: 315px;
	    margin: 0 auto 25px;
	}
	.quality-menu a {
		width: 95px;
		height: 30px;
		line-height: 30px;
		font-size: 14px;
		border-radius: 4px;
	}
	.quality-menu a:nth-of-type(2) {
		margin: 0 15px;
	}
	.quality-list ul li {
		width: calc(50% - 6px);
		width: -moz-calc(50% - 6px);
		width: -webkit-calc(50% - 6px);
	}
	.quality-list ul li:nth-of-type(2n+1) {
		margin: 0 12px 15px 0;
	}
	.quality-list ul li:nth-of-type(2n) {
		margin: 0 0 15px;
	}
	.quality-list ul li h4 {
	    height: 34px;
	    line-height: 35px;
	    font-size: 14px;
	}
}
@media only screen and (min-width: 992px) {
	.quality-list ul li {
		width: calc(25% - 15px);
		width: -moz-calc(25% - 15px);
		width: -webkit-calc(25% - 15px);
	}
	.quality-list ul li:nth-of-type(4n+1),.quality-list ul li:nth-of-type(4n+2),.quality-list ul li:nth-of-type(4n+3) {
		margin: 0 20px 20px 0;
	}
	.quality-list ul li:nth-of-type(4n) {
		margin: 0 0 20px;
	}
}