/*index slider*/
#banner{
	text-align:center;
}
/*index slider_student button*/
#slider_student {
	position:relative;
}
#slider_student  .pnBtn{
	text-align:left;
}
#slider_student .prev .arrow{
	position:absolute;
	top:150px;
	left:0;
	z-index:1;
}
#slider_student .next .arrow{
	position:absolute;
	top:150px;
	right:0;
	z-index:1;
}
#slider_student .arrow{
	font-size:40px;
	color:#9b9896;
	padding:8px 20px;
	border-radius:50%;
	background-color:#FFF;
}