JSFiddle - React, Tailwind, and code Playground

HTML

<ol>
    <li>Outter
        <ul>
            <li>
                Inner
            </li>
        </ul>
    </li>
</ol>

CSS

ol > li {text-decoration:line-through; color:red;}
ol > li > ul {display: inline-block; width:100%;}
ol > li > ul > li{text-decoration:none; color:pink;}