JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
    <li>One</li>
    <li class="hide">
        Two
        <ul>
            <li class="reshow">Re Show Me</li>
            <li>Inner 2</li>
        </ul>
    </li>
    <li>Three</li>
</ul>

CSS

.hide {display: none}
.reshow {display: block !important; position: fixed; top: 0; left: 0;}