JSFiddle - React, Tailwind, and code Playground

HTML

<div class="content">
    <input type="checkbox" id="content-change-color" />
    <p>Aqui é o texto que trocará de cor.</p>
</div>
<label for="content-change-color">clique para trocar a cor do texto.</label>

CSS

#content-change-color:checked + p{
    color: red;
}