img{
    width: 100%;
    height: 100%;
}
.head_img{
	width: 100%;
	height: 680px;
}
.content>ul{
    width: 1202px;
    margin: 0 auto;
}
.content>ul>li{
    margin-top: 50px;
    margin-right: 22px;
    float: left;
    border-radius: 10px;
    width: 284px;
    height: 442px;
    background-color: #fff;
}
ul>li:nth-child(4n){
    margin-right: 0px;
}
.card>.teacher_img{
    margin: 10px auto;
    width: 268px;
    height: 290px;
}
.card>.teacher_img>img{
    border-radius: 10px 10px 0 0;
}
.card>.name{
    margin-top: 18px;
    font-size: 25px;
    line-height: 25px;
    color: #1F1F1F;
    font-weight: 700;
    text-align: center;
}
.card>.call,
.card>.level{
    margin-top: 19px;
    font-size: 22px;
    color: #1F1F1F;
    text-align: center;
    line-height: 22px;
}