JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
    <div class="bp"></div>
</div>

CSS

.container {
    background: #FF0000;
    width: 200px;
    height: 200px;
    position: relative;
}

.container.hide {
    width: 50px;
}

.bp {
    background: #00FFFF;
    width: 30px;
    height:30px;
    top:0px;
    right:0px;
    position:absolute;
    cursor: pointer;
}

.bp:hover {
    background: #0000FF;
}

JavaScript

$(document).ready(function() {
$('.bp').click(function() {
    
    if($('.container').hasClass('hide')) {
        $('.container').removeClass('hide');
    }
    else {
        $('.container').addClass('hide');
    }
});
    
});