JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wrap">
    <div class="cont_short">Don't target</div>
    <div class="cont_short">Don't target</div>
    <div class="cont_short">Don't target</div>
    <div class="cont_short">Don't target</div>
    <div class="cont_short">Don't target</div>
    <div class="cont_short">Don't target</div>
</div>
<div class="wrap">
    <div class="cont_short">Don't target</div>
    <div class="cont_short">Don't target</div>
    <div class="cont_short">Don't target</div>
    <div class="cont_short">Don't target</div>
    <div class="cont_short">Don't target</div>
    <div class="cont_short">Don't target</div>
</div>

CSS

div.wrap div.cont_short:nth-of-type(2) {
    color: red;
}