app.js

<h1>Buttons</h1>

<Theme name="jedi">
  <h2>Jedi theme</h2>
  <div className="row">
    <Button type="primary">Primary button</Button>

    <Button type="primary" size="s">
      Primary button small
    </Button>
    <Button type="secondary">Secondary button</Button>

    <Button type="secondary" size="s">
      Secondary button small
    </Button>
  </div>
</Theme>
<Theme name="sith">
  <h2>Sith theme</h2>
  <div className="row">
    <Button type="primary">Primary button</Button>

    <Button type="primary" size="s">
      Primary button small
    </Button>
    <Button type="secondary">Secondary button</Button>
    <Button type="secondary" size="s">
      Secondary button small
    </Button>
  </div>
</Theme>