.popup {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 200px;
  height: 200px;
}

.popup img {
  width: 100%;
  height: 100%;
}

.close {
  position: absolute;
  top: 5px;
  right: 5px;
  cursor: pointer;
  font-size: 20px;
}