JSFiddle - React, Tailwind, and code Playground

HTML

<div id="window_1" class="window">window 1</div>

<div class="op_link">
<a href="#" name="1">Open window</a>
</div>

CSS

.window { display: none; margin: 5% auto; width: 50%; height: 400px; position: fixed; left: 25%; border: 1px solid; background-color: red; }

JavaScript

$('.op_link a').click(function()
{
    $('#window_' + $(this).attr('name')).toggle();
});