JSFiddle - React, Tailwind, and code Playground

HTML

<a onclick="toggle()">Click me</a><br /> 
<div id="hidden1" class="hidden">
    stuffs
</div>
<script>
function toggle()
{
    var element = document.getElementById('hidden1');
    element.className = "hidden";
    
    if (element.style.display == "") {
        element.style.display = "none";
    }
    
    if (element.style.display === 'none')
    {
        element.style.display = 'inline';
    }
    else
    {
        element.style.display = 'none';
    }
}
</script>

CSS

.hidden
{
    display:none;
}