JSFiddle - React, Tailwind, and code Playground

HTML

<div id="b">#b</div><div id="a">#a</div>

CSS

#a {
  height: 200vh;
}
#b > div {
  height: 80vh;
}

JavaScript

$(function () {
    $('#a').click(function() {
        $('#b').append('<div>a</div>');
    });
});