```js
// Button.stories.js

import Button from './Button.svelte';

export default {
  component: Button,
  title:'Components/Button'
}

export const Primary = () => ({
  Component: Button,
  props: {
    background: '#ff0',
    label: 'Button',
  },
});

export const Secondary = () => ({
  Component: Button,
  props: {
    background: '#ff0',
    label: '😄👍😍💯',
  },
});

export const Tertiary = () => ({
  Component: Button,
  props: {
    background: '#ff0',
    label: '📚📕📈🤓',
  },
});
```