JSFiddle - React, Tailwind, and code Playground

HTML

<div class="preview">
    <div class="panel">
        <div class="dmPageHeadline">Something 1</div>
    </div>
    <div class="panel">
        <div class="dmPageHeadline">Something 2</div>
    </div>
    <div class="panel">
        <div class="dmPageHeadline">Something 3</div>
    </div>
    <div class="panel">
        <div class="dmPageHeadline">Something 4</div>
    </div>
</div>

JavaScript

$(".preview .panel .dmPageHeadline").prepend(" 1 - ");