figure.gallery-masonry-item {
    position: relative;
}
.gallery-caption {
    position: static;
}
/* title */
figcaption.gallery-caption .gallery-caption-wrapper p.gallery-caption-content {
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 99999999;
    padding: 7%;
    transition: opacity ease 200ms !important;
    opacity: 0 !important;
pointer-events: none;
}
/* title color */
figure.gallery-masonry-item * {
    color: #fff !important;
}
figure.gallery-masonry-item:hover .gallery-caption-wrapper p.gallery-caption-content {
    opacity: 1 !important;
}
/* overlay */
.gallery-masonry-item-wrapper:after {
    background: rgba(0,0,0,0.5); /* overlay color */
    content: "";
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0;
    transition: opacity ease 200ms !important;
    pointer-events: none;
}
.gallery-masonry-item:hover .gallery-masonry-item-wrapper:after {
    opacity: 0.75;
}
/* remove gap */
figcaption {
    padding: 0 !important;
}