.modal-carregando {
  position: fixed;
  inset: 0;
  display: none;
  justify-content: center;
  align-items: center;
  background: rgba(0, 0, 0, 0.5);
  color: #fff;
  font-size: 18px;
  z-index: 9999;
}
.modal-carregando.show {
  display: flex;
}