$namespace: re-mask;
$maskFade: #{$namespace}-fade;

.#{$namespace} {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 101;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.45);
  transition: opacity 400ms cubic-bezier(.7, .3, .1, 1);
}

.#{$maskFade} {
  &-enter, &-appear {
    opacity: 0;
  }

  &-enter-active, &-appear-active, &-enter-done {
    opacity: 1;
  }

  &-exit {
    opacity: 1;
  }

  &-exit-active {
    opacity: 0;
  }

  &-exit-done {
    display: none;
  }
}