JSFiddle - React, Tailwind, and code Playground

HTML

<input id="toggle" type="checkbox">
<label for="toggle">Show Panel</label>
<div id="panel">
Panel
</div>

CSS

#toggle:not(:checked) ~ #panel {
  display: none;
}

#panel {
    border-radius: 0.5rem;
    border: solid 1px black;
    padding: 1rem;
    margin: 1rem;
}