.StepperVerticalStepSubstepButton_open {
    --stepper-vertical-step-substep-button-icon-rotate: 0deg;
  }
  .StepperVerticalStepSubstepButton_closed {
    --stepper-vertical-step-substep-button-icon-rotate: 180deg;
  }
  .StepperVerticalStepSubstepButton-Icon {
    transform: rotate(var(--stepper-vertical-step-substep-button-icon-rotate));
    transition: var(--transition-default) transform;
  }