.thumbnail {
  max-width: 200px;
  max-height: 200px;
  width: auto;
  height: auto;
  object-fit: contain;
  margin: 10px; /* Optional spacing */
  transition: transform 0.2s ease;
}

.modal {
  display: none; /* Hidden by default */
  position: fixed; /* Stay in place */
  z-index: 1000; /* Above other content */
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto; /* Enable scroll for large PDFs */
  background-color: rgba(0, 0, 0, 0.8); /* Black background with opacity */
}

.modal-content {
  margin: auto;
  display: block;
  width: 90%;
  height: 90%;
  border: none; /* Remove border for iframe */
}

.close {
  position: absolute;
  top: 20px;
  right: 35px;
  color: white;
  font-size: 30px;
  font-weight: bold;
  cursor: pointer;
}

.close:hover, .close:focus {
  color: red;
  text-decoration: none;
  cursor: pointer;
}