static get styles() {
    return [
      ...super.styles,
      css`
        .input-group__container > .input-group__input ::slotted(.form-control) {
          text-align: center;
        }

        .input-stepper__value {
          position: absolute;
          width: 1px;
          height: 1px;
          overflow: hidden;
          clip-path: inset(100%);
          clip: rect(1px, 1px, 1px, 1px);
          white-space: nowrap;
          border: 0;
          margin: 0;
          padding: 0;
        }
      `,
    ];
  }
`LionInputStepper` is a class for custom input-stepper element (`<lion-input-stepper>` web component).

@customElement lion-input-stepper