JSFiddle - React, Tailwind, and code Playground

HTML

<div id="el">
    div
</div>

CSS

#el
{
    border: 1px solid #000;
    width: 75%;
    height: 500px;
}

JavaScript

$(window).resize(function() {
    area = 50000;
    width = $('#el').width();
    $('#el').height(Math.ceil(area/width));
    });