JSFiddle - React, Tailwind, and code Playground

HTML

<div id="kasticketproducts">
    <div class="aProductHeader">Head</div>
    <div class="aProduct">Product</div>
    <div class="aProductHeader">Head</div>
    <div class="aProduct">Product</div>    
</div>

CSS

#kasticketproducts div:first-of-type + div {
    color: red;
}