JSFiddle - React, Tailwind, and code Playground

HTML

<label for="openContent">Toggle Content</label>
<input type="checkbox" id="openContent" style="display:none;" />
<div id="myContent">Here!</div>

CSS

#openContent + #myContent {
        display:none;
    }

    #openContent:checked + #myContent {
        display:block;
    }