.imgg {
    height: 200px;
    width: 250px;
    margin:1% 12px;
}

.gallery {
    padding:2% 8%;
}

@media (max-width: 991px) {
    .imgg {
        height: 250px;
        width: 100%;
        margin: 4% 0;
    }

    .gallery {
        padding: 2% 7%;
        margin: 0;
        margin-top:5%;
    }
}