.lightbox {
  display: none;
  position: fixed;
  z-index: 999;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
}

.lightbox-content {
  display: block;
  margin: auto;
  max-width: 90%;
  max-height: 90%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.close {
  color: #fff;
  font-size: 30px;
  position: absolute;
  top: 10px;
  right: 25px;
  cursor: pointer;
}