JSFiddle - React, Tailwind, and code Playground

HTML

<style>
    .deneme {
        width: 200px;
        height: 200px;
        background-color: mediumslateblue;
        cursor: pointer;
    }
</style>
<div class="deneme"></div>
<script>
    $('.deneme').click(function () {
        $(this).width('100px').height('100px');
    });
</script>