.custom-figure {
    cursor: pointer;
}

.custom-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.75), transparent);
    color: #fff;
    padding: 20px 15px 10px;
    font-size: 0.9rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.custom-figure:hover .custom-caption {
    opacity: 1;
}