.modal {
  display: none;
  position: fixed;
  z-index: 1;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0,0,0,0.7);
}

.modal-content {
  margin: auto;
  display: block;
  max-width: 80%;
  max-height: 80%;
  position: relative;
  top: 50%;
  transform: translateY(-50%);
}

.close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  color: white;
  font-size: 2rem;
  cursor: pointer;
}