.cert-overlay-wrap {
    position: relative;
    overflow: hidden;
    display: block;
    margin-bottom: 30px;
}
.certificate .owl-item img{
     margin-bottom: 0px;
}
.cert-overlay-wrap .cert-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
.cert-overlay-wrap:hover .cert-overlay {
    opacity: 1;
    visibility: visible;
}
.cert-overlay-text {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.4;
    transform: translateY(15px);
    transition: transform 0.3s ease;
}
.cert-overlay-wrap:hover .cert-overlay-text {
    transform: translateY(0);
}