zurb-foundation-5/doc/includes/button_group/examples_button_group_basic_mixin.html

Foundation 5 for npm (no code modification from original repo)

{{#markdown}}
```html
<ul class="custom-button-group-class">
  <li><a href="#" class="custom-button-class">Button 1</a></li>
  <li><a href="#" class="custom-button-class">Button 2</a></li>
  <li><a href="#" class="custom-button-class">Button 3</a></li>
</ul>
```
{{/markdown}}