#popupWindow {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #fff;
  z-index: 9999;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.3);
  max-width: 400px;
  animation: fadeIn 0.5s ease-in-out;
}

#popupWindow img {
  width: 100%;
  border-radius: 8px;
  margin-bottom: 15px;
}

#popupWindow .close-btn {
  cursor: pointer;
  position: absolute;
  top: 8px;
  right: 12px;
  font-size: 20px;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translate(-50%, -60%);
  }
  to {
    opacity: 1;
    transform: translate(-50%, -50%);
  }
}