.picture_teacher{margin:20px 30px}
.pt_title{border-bottom:1px #ddd inset;height:40px;line-height:40px;overflow:hidden}
.pt_title h4{font-size:18px;color:#333;width:auto;float:left}
.pt_title a{float:right}
.picture_teacher dl{overflow:hidden;margin:20px -15px 0}
.picture_teacher dl dd{float:left;width:12.5%;margin:0 0 10px 0}
.picture_teacher dl dd a{display:block;margin:0 15px}
.picture_teacher dl span{height:0;display:block;overflow:hidden;padding-bottom:134%}
.picture_teacher dl dd img{width:100%}
.picture_teacher dl p{font-size:14px;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin:10px 0 0 0}


@media screen and (max-width:1100px){
    .picture_teacher dl dd {width: 16.6%;}
}
@media screen and (max-width:997px) {
    .picture_teacher dl dd {
        width: 25%;
    }
}
@media screen and (max-width:768px) {
    .picture_teacher dl dd {
        width: 50%;
    }
}