.modal {
  display: none;
}
.modal .modal-wrap {
  position: fixed;
  z-index: 100;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: white;
  width: 600px;
  max-width: calc(100% - 4rem);
  max-height: calc(100vh - 8rem);
  padding: 1em;
  overflow: auto;
}
.modal-bg {
  background-color: black;
  position: fixed;
  z-index: 100;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
}
.modal .modal-close {
  position: absolute;
  right: 0.5em;
  top: 0.5em;
}