.arrow_left,.arrow_right {
	position: absolute;
	top: 0;
	height: 100%;
	line-height: 350px;
	cursor: pointer
}

.arrow_left i,.arrow_right i {
	color: #3f3f3f;
	font-size: 50px
}

.arrow_left:hover i,.arrow_right:hover i {
	color: #ff7f14
}

.arrow_left {
	width: 50px;
	left: -50px
}

.arrow_right {
	width: 50px;
	right: -50px
}

.teacher dl {
	display: block;
	width: 960px;
	padding: 33px 20px;
	background-color: #fff
}

.student_bg {
	width: 1000px;
	margin: 0 auto;
	padding: 40px 0;
	border-bottom: dashed 1px #eee
}

.student {
	margin-top: 30px;
	min-height: 320px;
	_height: 320px
}

.student_big {
	display: none;
	filter: alpha(opacity=0);
	-moz-opacity: 0;
	-khtml-opacity: 0;
	opacity:0;
}

.student_big.active {
	display: block;
	filter: alpha(opacity=100);
	-moz-opacity: 1;
	-khtml-opacity: 1;
	opacity: 1
}

.student_big_txt {
	line-height: 2.5em;
	color: #777;
	text-align: center;
}

.student_big_txt1 {
	font-size: 22px;
	font-weight:700;
}

.student_big_txt2 {
	font-size: 16px;
	line-height:28px;
}

.student_big_txt3{
	font-size:16px;
	color:#999;
}