.about-in {
	min-height: 100%;
	position: relative;
	text-align: center;
}

.about-in p {
	/* text-indent: 2em; */
	max-width: 1000px;
	text-align: center;
	letter-spacing: 1.5px;
}

.about-in .bg-img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	position: absolute;
	left: 0;
}

.about-in .about-seletc {
	overflow: hidden;
	font-size: 20px;
	line-height: 26px;
	padding-bottom: 48px;
	width: 278px;
	margin: 0 auto;
}

.about-in .about-seletc .about-seletc-item {
	cursor: pointer;
}

.about-in .about-seletc .about-seletc-item:first-of-type {
	float: left;
}

.about-in .about-seletc .about-seletc-item:last-of-type {
	float: right;
}

.about-in .about-seletc .about-seletc-item.about-seletc-item-sctive {
	font-weight: bold;
	color: #3074FF;
}

#about-certificate {
	display: none;
}

.certificate-ul {
	overflow: hidden;
	/* width: 1200px; */
	/* margin: 0 auto; */
	display: inline-block;
}

.certificate-ul li {
	vertical-align: middle;
	display: inline-block;
	margin-right: 36px;
	position: relative;
	z-index: 9;
}

.certificate-ul li:last-child {
	margin-right: 0;
}

.certificate-ul li img {
	display: block;
	/* width: 100%;
	height: 100%; */
}

.about-in .about-words {
	color: #FFFFFF;
	margin: 0 auto;
	position: relative;
	z-index: 9;
	width: 1000px;
	padding-top: 130px;
	padding-bottom: 40px;
}

.about-in .about-words h2 {
	text-align: center;
	font-size: 65px;
	line-height: 87px;
	font-weight: normal;
}

.about-in .about-words h3 {
	text-align: center;
	font-weight: normal;
	font-size: 24px;
	line-height: 31px;
	padding-bottom: 37px;
}