```js
// Button.stories.js

import { Button } from './Button';

export default {
   /* 👇 The title prop is optional.
   * See https://storybook.js.org/docs/7.0/react/configure/overview#configure-story-loading
   * to learn how to generate automatic titles
   */
  title: 'Button',
  component: Button,
  argTypes: {
    label: { control: 'text' }, // always shows
    advanced: { control: 'boolean' },
    // Below are only included when advanced is true
    margin: { control: 'number', if: { arg: 'advanced' } },
    padding: { control: 'number', if: { arg: 'advanced' } },
    cornerRadius: { control: 'number', if: { arg: 'advanced' } },
  },
};
```