JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
    <li> 
        test 1
        <ul>
            <li> List 1</li>
            <li> List 2</li>
            <li> List 3</li>
        </ul>
    </li>
</ul>

CSS

li:hover {
    color:#f00;
}
li, li:hover li {
    color:#000;
}