.about1img{
	float: left;
	width: calc(100% - 30px);
	margin: 15px;
}

.aboutMain{
	float: left;
	width: 100%;
	min-height: 550px;
	box-sizing: border-box;
	padding: 15px;
	color: #999999;
	line-height: 30px;
}
.aboutMain span{
	display: inline;
}

.aboutList{
	float: left;
	width: 100%;
	margin-top: 20px;
}

.aboutList .item{
	float: left;
	width: calc((100% - 80px) / 3);
	margin-left: 20px;
	cursor: pointer;
}

.aboutList .item .img {
	float: left;
	width: 100%;
	height: 170px;
	display: flex;
	justify-content: center;
	align-items: center;
}

.aboutList .item .img img{
	max-width: 100%;
	max-height: 100%;
}

.aboutList .item span {
	float: left;
	width: 100%;
	line-height: 40px;
	text-align: center;
	font-size: 14px;
	color: #666666;
}

.imgMask{
	width: 100vw;
	height: 100vh;
	background-color: rgba(0, 0, 0, .7);
	position: fixed;
	top: 0;
	left: 0;
	z-index: 2;
	display: none;
	justify-content: center;
	align-items: center;
}

.imgMask .close{
	width: 40px;
	height: 40px;
	background-color: #FFFFFF;
	border-radius: 4px;
	line-height: 40px;
	font-size: 18px;
	color: #999999;
	text-align: center;
	position: absolute;
	top: 15px;
	right: 15px;
	cursor: pointer;
}

.imgMask img{
	max-width: 50%;
}

@media (max-width: 480px) {
	.aboutList .item{
		width: calc((100% - 15px) / 2);
		margin-left: 15px;
	}
	.aboutList .item:nth-child(2n+1){
		margin-left: 0;
	}
}