```js
// Gizmo.stories.js|jsx|ts|tsx

import { Gizmo } from './Gizmo';

export default {
  /* 👇 The title prop is optional.
  * See https://storybook.js.org/docs/react/configure/overview#configure-story-loading
  * to learn how to generate automatic titles
  */
  title: 'Gizmo',
  component: Gizmo,
  argTypes: {
    width: {
      control: { type: 'range', min: 400, max: 1200, step: 50 },
    },
  },
};
```