.teacher {
    width: 1000px;
    margin: 20px auto;
}

.teacher_title {
    width: 400px;
    height: 35px;
    line-height: 35px;
    border-top-right-radius: 50px;
    background-color: rgba(36, 80, 134, 0.9);
}

.teacher_title h2 {
    color: #fff;
    margin-left: 25px;
}

.teacher_main {
    display: flex;
    justify-content: center;
    flex-direction: row;
    flex-wrap: wrap;
    width: 1000px;
    border-top: 1px solid rgba(36, 80, 134, 0.9);
    border-left: 1px solid #e0e0e0;
    border-right: 1px solid #e0e0e0;
}

._item {
    width: 210px;
    height: 320px;
    margin: 20px 35px;
    box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);
}

._item img {
    width: 210px;
    height: 280px;
}

._item_title {
    line-height: 30px;
    text-align: center;
}