.ptn-box-wrapper {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30rem;
}

.ptn-box {
    height: 250rem;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 1px solid #ddd;
    overflow: hidden;
}

.ptn-box img {
    width: 220rem;
    transition: all .2s;
}

.ptn-box:hover img {
    transform: scale(1.06);
}


/*==================================================*/
@media (max-width: 768px) {
    .ptn-box-wrapper {
        grid-template-columns: repeat(2, 1fr);
        gap: 20rem;
    }
}