Cluster

Inline groups that wrap naturally, useful for action rows, tags, and toolbars.

Use .cluster for inline groups that wrap naturally.

Read docs 
<div class="cluster">
  <button class="btn primary" type="button">Save</button>
  <button class="btn outline" type="button">Cancel</button>
  <a href="/docs">Read docs</a>
</div>

Use cluster for action rows, tags, toolbar sections, metadata, and compact navigation.