.t_container {
    margin-top: 50px;
    max-width: 980px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    justify-items: center;
    margin: 100px auto;
    row-gap: 40px;
}

.t_container .teacher {
    width: 270px;
    background: #5e5b94;
    border-radius: 10px;
    overflow: hidden;
    color: #fff;
    box-shadow: 0 0 5px #5b5e63;
    font-size: 16px;
}

.t_container .teacher .t_pic {
    width: 270px;
}

.t_container .teacher .bio {
    padding: 15px;
    text-align: justify;
}

.t_container .teacher .bio .name {
    text-align: center;
    margin-bottom: 15px;
}

@media screen and (max-width: 1000px) {
    .t_container {
        grid-template-columns: repeat(2, 1fr);
        max-width: 620px;
    }

    .t_container .teacher:last-child {
        grid-column: 1/-1;
        justify-self: center;
    }
}

@media screen and (max-width: 680px) {
    .t_container {
        grid-template-columns: 1fr;
    }
}