@collab-ui/core/scss/components/avatar/examples/typing.html

Cisco Collab UI CSS Framework

  <div class="cui-avatar cui-avatar--typing" title="Barbara">
      <img alt="Barbara" class="cui-avatar__img" src="http://react.collab-ui.com/barbara.png">
      <div class="cui-loading">
      <span class="cui-loading__icon"></span>
      <span class="cui-loading__icon"></span>
      <span class="cui-loading__icon"></span>
    </div>
  </div>