JSFiddle - React, Tailwind, and code Playground

HTML

<li>Test
    <ol>
        <li>1</li>
        <li>2</li>
    </ol>
    <li>1 li</li>
</li>
<script>
$( "li:has(ol)" ).addClass( "test" );
</script>

CSS

.test:before {
    content: '';
    position: absolute;
    width: 10px;
    height: 10px;
    background: red;
}