JSFiddle - React, Tailwind, and code Playground

HTML

<div class="collapse">
    <h1><a href="#" class="clickme">Test</a></h1>
    <div class="show-on-click">
        <a href="www.google.com">link</a>
        <p>some other text</p>
    </div>
</div>

CSS

.show-on-click {
    display: none;
}

.show-on-click.is-active {
    display: block;
}

JavaScript

$(".clickme").on("click", function() {
    $(".show-on-click").toggleClass("is-active");
});