JSFiddle - React, Tailwind, and code Playground

HTML

<div id="income">
    
<h5 onclick="toggle_visibility('incometoggle');">INCOME</h5>

    <div id="incometoggle">
        	<h6>Income Total</h6> 
    </div>
</div>

JavaScript

function toggle_visibility(id) {
    var e = document.getElementById(id);
    if (e.style.display == 'none') e.style.display = 'block';
    else e.style.display = 'none';
}