```ts
// List.stories.ts

import type { Meta, StoryObj } from '@storybook/web-components';

import { html } from 'lit-html';

const meta: Meta = {
  title: 'List',
  component: 'demo-list',
};
export default meta;

type Story = StoryObj;

export const Empty: Story = {
  render: () => html`<demo-list></demo-list>`,
};

export const OneItem: Story = {
  render: () => html`
    <demo-list>
      <demo-list-item></demo-list-item>
    </demo-list>
  `,
};

export const ManyItems: Story = {
  render: () => html`
    <demo-list>
      <demo-list-item></demo-list-item>
      <demo-list-item></demo-list-item>
      <demo-list-item></demo-list-item>
    </demo-list>
  `,
};
```