@collab-ui/core/scss/components/popover/examples/arrow.html

Cisco Collab UI CSS Framework

<div class="cui-event-overlay cui-event-overlay--arrow cui-event-overlay--right">
  <div class="cui-event-overlay__arrow" style="left: 405.297px; top: 225px;"></div>
  <div class="cui-event-overlay__children" style="overflow: auto; top: 201.5px; left: 405.297px;">
    <span style="padding: 10px;">Arrow</span>
  </div>
</div>