Size

Button groups support same sizes as buttons large, default or small.

Markup

Toggle example guides Toggle HTML markup 

<div pam-Button-Group="large">
    <button pam-Button>Large</button>
    <button pam-Button>Large</button>
    <button pam-Button>Large</button>
</div>
<div pam-Button-Group>
    <button pam-Button>Default</button>
    <button pam-Button>Default</button>
    <button pam-Button>Default</button>
</div>
<div pam-Button-Group="small">
    <button pam-Button>Small</button>
    <button pam-Button>Small</button>
    <button pam-Button>Small</button>
</div>