JSFiddle - React, Tailwind, and code Playground

HTML

<div class="formbuilder">
    <div class="active">Heading</div>
    <div>1</div>
    <div class="bh">2</div>
    <div>3</div>
    <div>4</div>
</div>

CSS

.active {
    border green :1px solid;
}

JavaScript

$(document).ready(function () {
    $('.formbuilder div').on('click', function () {
        $('.formbuilder .bh').removeClass('active');
        $(this)addClass.('active');
    });
});