.$(accordion) {
  &-body {
    transition: max-height .2s;
  }

  .$(accordion)-header {
    .$(accordion)-icon {
      transition: transform .2s;
    }
  }

  input.$(accordion)-indicator:checked ~,
  &[open],
  &.open {
    .$(accordion)-header {
      .$(accordion)-icon {
        transform: rotate(90deg);
      }
    }
  }
}