.overlay {
  width: 100%;
  height: 100%;
  position: fixed;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);

  transition: all ease .25s;
  visibility: hidden;
  opacity: 0;

  &.active {
    opacity: 1;
    visibility: visible;
  }
}