.course-class-infos {
position: relative;
    background: #666;
	top:50px;
	z-index: 10;
}           
.info-bg ,.cover-img-wrap{
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
}       
.cover-img-wrap {
    z-index: -1;
    overflow: hidden;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
	background-image: url(../images/connect-banner.jpg);
}
.course-class-infos .banner-inner {
    width: 960px;
    color: #fff;
    position: absolute;
	left:0;
	right:0;
	margin:0 auto;
}
.course-class-infos .banner-inner h3 {
    text-align: center;
    font-size: 40px;
    margin-top: 138px;
    margin-bottom: 0;
    line-height: 40px;
    font-weight: 400;
}
.course-class-infos .banner-inner p {
    margin-top: 30px;
    font-size: 16px;
    font-weight: 400;
    line-height: 34px;
    text-align: center;
}

.detail-item ul li,.intro-outer {
	box-sizing: border-box;
	text-align: center
}

.banner-outer {
	height: 364px;
	width: 100%;
	background-image: url(../images/connect-banner.jpg);
	background-position: center 0;
	padding-top: 1px
}

.banner-outer .banner-inner {
	width: 960px;
	margin: 165px auto auto;
	color: #fff;
	position: relative
}

.banner-outer .banner-inner h3 {
	text-align: center;
	font-size: 40px;
	margin-top: 138px;
	margin-bottom: 0;
	line-height: 40px;
	font-weight: 400
}

.banner-outer .banner-inner p {
	margin-top: 30px;
	font-size: 16px;
	font-weight: 400;
	line-height: 34px;
	text-align: center
}

.detail-item {
	padding: 90px 0
}

.detail-item h2 {
	text-align: center;
	margin: 0 auto;
	font-size: 34px;
	color: #545d69;
	font-weight: 400
}

.detail-item ul {
	height: 38px;
	width: 510px;
	margin: 90px auto auto
}

.detail-item ul li {
	width: 127px;
	font-size: 20px;
	color: #545d69;
	height: 38px;
	float: left;
	cursor: pointer;
	line-height: 28px;
	border-bottom: 2px solid transparent;
	transition: border-color .3s ease-in-out,color .3s ease-in-out
}

.detail-item ul li.active {
	color: #09aeb0;
	border-bottom: 2px solid #09aeb0
}

.detail-item .map-outer {
	width: 960px;
	height: 453px;
	margin: 60px auto auto;
	position: relative
}

.detail-item .map-outer .desc-outer {
	padding: 40px 25px;
	background-color: #fff;
	position: absolute;
	border: 1px solid #bfbfbf;
	border-radius: 1px;
	box-shadow: 0 0 16px 3px rgba(82,109,113,.4)
}

.detail-item .map-outer .desc-outer .desc-inner {
	display: inline-block;
	margin-left: 20px;
	vertical-align: top
}

.detail-item .map-outer .desc-outer .desc-inner p {
	color: #7b8390;
	font-size: 16px;
	margin: 0 0 20px;
	line-height: 16px
}

.detail-item .map-outer .desc-outer .image-outer {
	width: 100px;
	height: 103px;
	display: inline-block;
	background-image: url(../images/connection_sprite-d2d9e4d89b.png)
}

.detail-item .map-outer .desc-outer:after,.detail-item .map-outer .desc-outer:before {
	content: " ";
	position: absolute;
	background-color: #fff;
	display: block
}

.detail-item .map-outer .desc-outer:after {
	width: 25px;
	height: 41px;
	top: 4px;
	left: 0;
	z-index: 16
}

.detail-item .map-outer .desc-outer:before {
	height: 19px;
	width: 19px;
	z-index: 5;
	transform: rotate(45deg);
	left: -10px;
	top: 15px;
	box-shadow: 0 0 16px 3px rgba(82,109,113,.4)
}

.detail-item .map-outer[data-index="0"] .desc-outer,.detail-item .map-outer[data-index="1"] .desc-outer {
	left: 430px;
	top: 75px
}

.detail-item .map-outer[data-index="0"] {
	background-image: url(../images/map_beijing-383c66ec4c.png)
}

.detail-item .map-outer[data-index="0"] .desc-outer .image-outer {
	background-position: -243px 0
}

.detail-item .map-outer[data-index="1"] {
	background-image: url(../images/map_shanghai-f8f8855ad9.png)
}

.detail-item .map-outer[data-index="1"] .desc-outer .image-outer {
	background-position: -105px 0
}

.detail-item .map-outer[data-index="3"] {
	background-image: url(../images/map_hangzhou-abd307a26b.png)
}

.detail-item .map-outer[data-index="3"] .desc-outer {
	left: 320px;
	top: 119px
}

.detail-item .map-outer[data-index="3"] .desc-outer .image-outer {
	background-position: -55px -114px
}

.detail-item .map-outer[data-index="2"] {
	background-image: url(../images/map_shenzhen-fa8c154203.png)
}

.detail-item .map-outer[data-index="2"] .desc-outer {
	left: 260px;
	top: 110px
}

.detail-item .map-outer[data-index="2"] .desc-outer:before {
	left: 514px
}

.detail-item .map-outer[data-index="2"] .desc-outer:after {
	left: 499px
}

.detail-item .map-outer[data-index="2"] .desc-outer .image-outer {
	background-position: 0 0
}

.intro-outer {
	height: 600px;
	width: 100%;
	background-image: url(../images/nav-background-76ff17b3fd.png);
	padding-top: 100px;
	background-position: center 0;
	color: #545d69
}

.intro-outer h6 {
	font-size: 16px;
	font-weight: 700;
	margin: 0;
	text-align: center;
	line-height: 38px
}

.intro-outer h6.spec {
	margin-top: 20px
}

.intro-outer h6 i {
	display: inline-block;
	width: 24px;
	height: 24px;
	background-image: url(../images/connection_sprite-d2d9e4d89b.png);
	background-position: 0 -132px;
	vertical-align: middle;
	margin-right: 5px
}

.intro-outer p {
	text-align: center;
	font-size: 16px;
	line-height: 35px;
	margin: 0
}

.intro-outer a {
	width: 350px;
	height: 47px;
	display: inline-block;
	text-align: center;
	background-color: #09aeb0;
	color: #fff;
	font-size: 20px;
	line-height: 47px;
	margin-top: 60px;
	border-radius: 2px;
	text-decoration: none
}