@collab-ui/core/scss/components/button-group/examples/dark.html

Cisco Collab UI CSS Framework

  <div class="cui-button-group cui-button-group--dark cui-button-group--justified" role="group">
    <button
      class="cui-button cui-button--36"
      alt="Spaces"
      type="button"
      aria-label="Spaces">
      <span class="cui-button__children">Spaces</span>
    </button>
    <button
      class="cui-button cui-button--36"
      alt="Messages"
      type="button"
      aria-label="Messages">
      <span class="cui-button__children">Messages</span>
    </button>
  </div>