jQuery UI Library Icons Basic usage
Example
For a thick arrow pointing north in a span, add classes ui-icon and ui-icon-arrowthick-1-n:
<span class="ui-icon ui-icon-arrowthick-1-n"></span>
For a triangle pointing south in a span, add classes ui-icon and ui-icon-triangle-1-s:
<span class="ui-icon ui-icon-triangle-1-s"></span>
Full list of availliable items here https://api.jqueryui.com/theming/icons/
