.cert-logo {
    max-width: 150px; 
    margin-bottom: 10px;
    filter: drop-shadow(0px 0px 2px rgba(255, 255, 255, 0.4));
    transition: all 0.3s ease;
}
.cert-logo:hover {
    filter: drop-shadow(0px 0px 4px rgba(255, 255, 255, 0.6));
    transform: scale(1.05);
}