.cert-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(220px,1fr));
  gap:24px;
}

.cert-item{
  background:#fff;
  border-radius:16px;
  overflow:hidden;
  cursor:pointer;
  box-shadow:0 10px 30px rgba(0,0,0,.08);
  transition:.3s;
}

.cert-item:hover{
  transform:translateY(-6px);
}

.cert-item img{
  width:100%;
  height:100%;
  object-fit:contain;
  padding:20px;
}

/* POPUP */
.cert-popup{
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.8);
  display:none;
  align-items:center;
  justify-content:center;
  z-index:9999;
}

.cert-popup.active{
  display:flex;
}

.cert-popup img{
  max-width:90%;
  max-height:90%;
  background:#fff;
  padding:20px;
  border-radius:12px;
}

.popup-close{
  position:absolute;
  top:30px;
  right:40px;
  font-size:40px;
  color:#fff;
  cursor:pointer;
}