@media (min-width: 576px) {
    #gallery-body {
        -webkit-column-count: 1;
        -moz-column-count: 1;
        column-count: 1;
    }
}
@media (min-width: 768px) {
    #gallery-body {
        -webkit-column-count: 2;
        -moz-column-count: 2;
        column-count: 2;
    }
}
@media (min-width: 992px) {
    #gallery-body {
        -webkit-column-count: 3;
        -moz-column-count: 3;
        column-count: 3;
    }
}
@media (min-width: 1200px) {
    #gallery-body {
        -webkit-column-count: 4;
        -moz-column-count: 4;
        column-count: 4;
    }
}

.gallery-img {
    background-color: #fff;
    margin-bottom: .25rem;
    margin-top: .25rem;
    transition: .45s;
}

.gallery-img:hover {
    border-radius: 1.25rem;
    -webkit-box-shadow: 0px 0px 10px 0px rgba(0,0,0,0.75);
    -moz-box-shadow: 0px 0px 10px 0px rgba(0,0,0,0.75);
    box-shadow: 0px 0px 10px 0px rgba(0,0,0,0.75);
}