.customimage {
  margin: 0;

  &.hidden {
    opacity: 0;
  }

  &:not(.hidden) {
    &.slow {
      transition: opacity 500ms ease-in-out;
    }

    &.normal {
      transition: opacity 250ms ease-in-out;
    }

    &.fast {
      transition: opacity 10ms ease-in-out;
    }
  }
}
