.container11 {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin: 20px;
}
.member {
    flex: 1 1 calc(33.333% - 20px);
    box-sizing: border-box;
    margin: 10px;
    padding: 10px;
    text-align: center;
    border: 1px solid #ddd;
    border-radius: 8px;
    background: #f9f9f9;
}
.member img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
}
.member .name {
    font-size: 1.2em;
    margin: 10px 0 5px 0;
}
.member .position {
    font-size: 1em;
    color: #555;
}
@media (max-width: 768px) {
    .member {
        flex: 1 1 calc(50% - 20px);
    }
}
@media (max-width: 480px) {
    .member {
        flex: 1 1 100%;
    }
}