JSFiddle - React, Tailwind, and code Playground

HTML

<div class="plus" data-target="expand-me"></div>
<div id="expand-me">
    
</div>

CSS

.plus:after {
    content: '+';
}
.minus:after {
    content: '-';
}
#expand-me {
    width: 100%;
    height: 10px;
    background-color: red;
    transition: all 0.5s linear;
}
#expand-me.expanded {
    height: 300px;
}

JavaScript

$(document).on('click', '.plus, .minus', function() {
    var target = this.dataset.target;
    $('#'+target).toggleClass('expanded');
    $(this).toggleClass('plus minus');
});