JSFiddle - React, Tailwind, and code Playground
by JoshC
HTML
<table>
<th id="form:dataTable:discountStartDate">
<span class="ui-sortable-column-icon ui-icon ui-icon-carat-2-n-s">first item..</span>
<span class="ui-sortable-column-icon ui-icon ui-icon-carat-2-n-s">second item.. (using the :not selector, the styling isn't applied)</span>
</th>
</table>
CSS
#form\:dataTable\:discountStartDate span.ui-sortable-column-icon:not(:last-child) {
color:red;
}