/* Start Gallery CSS */
.thumb {
    margin-bottom: 15px;
}

.thumb:last-child {
    margin-bottom: 0;
}

/* CSS Image Hover Effects: https://www.nxworld.net/tips/css-image-hover-effects.html */
.thumb figure img {
    -webkit-filter: grayscale(100%);
    filter: grayscale(100%);
    -webkit-transition: .3s ease-in-out;
    transition: .3s ease-in-out;
}

.thumb figure:hover img {
    -webkit-filter: grayscale(0);
    filter: grayscale(0);
}