.students{margin:0 auto;width:1267px;height:300px;position:relative;}
 .students p.PP{width:510px;height:50px;font-size:16px;color:#333;text-align:center;position:absolute;top:60px; left:300px;}
#four_flash{position:relative;width:1267px;height:300px; margin:0 auto;position:absolute;bottom:0px;}
#four_flash .flashBg{width:1267px;height:300px; margin:0 auto;position:relative;overflow:hidden;}
#four_flash .flashBg ul.mobile{width:2000%;height:300px; position:absolute;top:15; left:0;}
#four_flash .flashBg ul.mobile li{float:left;width:300px;height:290px;margin-left:22px;}
#four_flash .flashBg ul.mobile li:first-child{margin-left: 0;}
#four_flash .flashBg ul.mobile li img{width:300px;height:290px;display:block; margin:0 auto;}
#four_flash .flashBg ul.mobile li dd{font-size:20px;width:250px;line-height:60px;text-align:center;border-bottom:1px solid #6C6E85;}
#four_flash .flashBg ul.mobile li p{margin: 0 auto;text-align:center;width:228px; line-height:24px;margin-top:20px;}
#four_flash .flashBg ul.mobile li a{display:block;}
#four_flash .but_left{width:50px;height:100px;position:absolute; top:136px; left:-37px;}
#four_flash .but_right{width:50px;height:100px; position:absolute; top:136px; right:-60px;}