@momentum-ui/react-collaboration/scss/components/button/examples/circle.html

Cisco Momentum UI Framework for React Collaboration Applications

<button type="button" class="md-button md-button--circle md-button--orange icon icon-search_20"></button>
<button type="button" class="md-button md-button--circle md-button--large"><span class="icon icon-search_24"></span></button>