a, a:hover, a:active, a:visited { color: inherit; text-decoration: none; cursor: pointer;}
.teacher-head {
	position: fixed;
	left: 0;
	top: 0;
	right: 0;
	height: 500px;
	z-index: -1;
}
@media (max-width: 768px) {
	.teacher-head {
		height: 200px;
	}
}
.teacher-head img {
	height: 100%;
	width: 100%;
	object-fit: cover;
}

.teacher {
	width: 100%;
	background-color: white;
	margin-top: 500px;
}

@media (max-width: 768px) {
	.teacher {
		margin-top: 210px;
	}
}

.teacher-container {
	color: #646464;
	text-align: center;
	max-width: 1020px;
	margin: 0 auto;
	padding: 125px 20px 0 20px;
}
@media (max-width: 768px) {
	.teacher-container {
		padding: 19px 0 0 0;
		padding: auto;
		width: 85.33%;
	}
}
.videos-title {
	color: #646464;
	opacity: 0.6;
    font-size: 18px;
    font-weight: 300;
    line-height: 25px;
    margin-bottom: 38px;
}
@media (max-width: 768px) {
	.videos-title {
		opacity: 1;
		font-size: 16px;
		line-height: 22px;
		margin-bottom: 10px;
	}
}
.teacher-list {
	width: 100%;
	/*display: flex;*/
	/*flex-wrap: wrap;*/
	/*justify-content: space-between;*/
	margin: 0 0 30px 0;
}
@media (max-width: 768px) {
	.teacher-list {
		justify-content: space-between;
		margin: 0;
	}
}

.teacher-all-type {
	display: flex;
	flex-direction: column;
}


.teacher-each-type {
	background: white;
	padding: 125px 0 90px 0;
}

@media (max-width: 768px) {
	.teacher-each-type {
		padding: 30px 28px;
	}
}


.teacher-title {
	color: #646464;
	font-size: 20px;
	line-height: 28px;
	text-align: center;
	width: 100%;
	margin: 0 0 20px 0;
	font-family: "PingFangSC-Medium";
}

@media (max-width: 768px) {
	.teacher-title {
		text-align: left;
		margin-bottom: 18px;
		font-size: 16px;
		line-height: 22px;

	}
}

.teacher-person {
	display: flex;
	flex-direction: row;
	flex-wrap: wrap;
	max-width: 980px;
	margin: 0 auto;
}

.teacher-each-person {
	width: 150px;
	margin: 38px 0 0 0;
	position: relative;
}

.teacher-each-person img {
	width: 150px;
	height: 150px;
	border-radius: 75px;
}

.teacher-each-person-phone {
	width: 100%;
	display: flex;
	border-top: 1px solid rgba(90,90,90,0.2);
}

.teacher-each-person-phone-avatar {
	width: 60px;
	height: 60px;
	border-radius: 30px;
	margin: 12px 20px auto 0;
	flex-shrink: 0;
}

.teacher-each-person-phone-arrow {
	width: 8px;
	height: 6px;
	margin: auto 0 19px 0;
	flex-shrink: 0;
}

.teacher-arrow-animation {
	-webkit-animation: rotate 0.5s 1 linear forwards;
	-o-animation: rotate 0.5s 1 linear forwards;
	animation: rotate 0.5s 1 linear forwards;
}

@keyframes rotate{
	0% {
		transform: rotate(0deg);
		-webkit-transform: rotate(0deg);
		-moz-transform: rotate(0deg);
		}
	100% {
		transform: rotate(180deg);
		-webkit-transform: rotate(180deg);
		-moz-transform: rotate(180deg);
		}
}


.teacher-each-person-phone-div {
	margin: 12px 26px 12px 0;
	display: flex;
	flex-grow: 1;
	flex-direction: column;
}

.teacher-each-person-more {
    vertical-align: bottom;
    position: absolute;
    top: 0;
    left: 0;
    width: 150px;
	height: 150px;
	border-radius: 75px;
    background-color: rgba(0, 0, 0, 0.8);
    opacity: 0;
    transition: all 0.3s;
}
.teacher-each-person-more > p {
    color: white;
    text-align: center;
    position: absolute;
    font-size: 14px;
    font-weight: 300;
    line-height: 14px;
    height: 14px;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: auto;
}
.teacher-each-person-more:hover {
    opacity: 1;
}


.teacher-name {
	font-size: 20px;
	line-height: 28px;
	margin-top: 31px;
	text-align: center;
	width: 100%;
	font-family: "HelveticaNeue-Light", "Helvetica Neue Light", "PingFangSC-Light";
}

.teacher-position {
	font-size: 16px;
	line-height: 33px;
	text-align: center;
	width: 100%;
	font-family: "HelveticaNeue-Light", "Helvetica Neue Light", "PingFangSC-Light";
}

.teacher-detail {
	color: #646464;
	font-size: 12px;
	font-weight: 300;
	line-height: 20px;
	/*text-align: justify;*/
	margin-top: 12px;
	overflow: hidden;
	font-family: "HelveticaNeue-Light", "Helvetica Neue Light", "PingFangSC-Light";
}

.teacher-detail-two {
	overflow : hidden;
	text-overflow: ellipsis;
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
}

@media (max-width: 768px) {
	.teacher-detail-two {
		height: 40px;
		width: 205px;
	}
	.teacher-name {
		font-size: 14px;
		line-height: 18px;
		margin-top: 0;
		text-align: left;
	}
	.teacher-position {
		font-size: 12px;
		line-height: 18px;
		text-align: left;
	}
}
.teacher-alert {
	width: 980px;
	height: 550px;
	background-color: #F6F6F5;
	margin: auto auto;
	display: flex;
	flex-direction: row;
}

.teacher-alert img {
	width: 250px;
	height: 360px;
	margin: 100px 93px 90px 50px;
}

.teacher-alert-right {
	display: flex;
	margin: 100px 50px 90px 0;
	flex-direction: column;
}

.teacher-right-name {
	font-size: 20px;
	color: #646464;
	line-height: 33px;
	font-family: "HelveticaNeue-Light", "Helvetica Neue Light", "PingFangSC-Light";
}

.teacher-right-position {
	font-size: 16px;
	color: #646464;
	line-height: 33px;
    display: -webkit-box;
	-webkit-box-orient: vertical;
	-webkit-line-clamp: 2;
	overflow: hidden;
	font-family: "HelveticaNeue-Light", "Helvetica Neue Light", "PingFangSC-Light";
}

.teacher-right-des {
	height: 192px;
	width: 530px;
	overflow: auto;
	color: #646464;
	font-size: 16px;
	font-weight: 300;
	line-height: 33px;
	margin: 23px 0 0 0;
	font-family: "HelveticaNeue-Light", "Helvetica Neue Light", "PingFangSC-Light";
}

/* 设置垂直滚动条的宽度和水平滚动条的高度 */
.teacher-right-des::-webkit-scrollbar{
    width: 8px;
    height: 8px;
}

/* 设置滚动条的滑轨 */
.teacher-right-des::-webkit-scrollbar-track {
      background-color: white;
}

/* 滑块 */
.teacher-right-des::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, 0.3);
    border-radius: 5px;
}

 /* 滑轨两头的监听按钮 */
.teacher-right-des::-webkit-scrollbar-button {
    background-color: white;
    display: none;
}

/* 横向滚动条和纵向滚动条相交处尖角 */
.teacher-right-des::-webkit-scrollbar-corner {
    /*background-color: black;*/
   border-radius: 5px;
}

.teacher-right-course {
	color: #646464;
	font-size: 16px;
	font-weight: 300;
	line-height: 22px;
	margin: auto 0 0 0;
	font-family: "HelveticaNeue-Light", "Helvetica Neue Light", "PingFangSC-Light";
}

.teacher-zhushi {
	color: #646464;
	font-size: 14px;
	font-weight: 300;
	line-height: 20px;
	margin-bottom: 57px;
	width: 100%;
	text-align: center;
}

@media (max-width: 768px) {
	.teacher-zhushi {
		font-size: 12px;
		font-weight: 300;
		line-height: 17px;
		margin-top: 19px;
		text-align: left;
	}
}