JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
    <li>1</li>
    <li>2</li>
    <li>3</li>
    <li>4</li>
    <li>5</li>
    <li class="more">
        <ul>
            <li>6</li>
            <li>7</li>
            <li>8</li>
            <li>9</li>
        </ul>
    </li>
</ul>

CSS

.bg {
    background: #ccc;
}

li:not(.more):nth-child(odd) {
    //background: yellow;
}

JavaScript

$("li:not(.more):odd").addClass("bg")