JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#" id="handle" class="down">v</a>
<div id="dialog" class="open">
    <p>Lorem Ipsem...</p>
</div>

CSS

a#handle {
    display: block;
    float: left;
    font-size: 3em;
    color: gray;
    text-decoration: none;
    width: 1em;
    height: 1em;
    line-height: 1em;
    text-align: center;
    font-family: sans-serif;
}
a:active, a:focus {
    outline-style: none;
}
a.up {
    -webkit-transform: rotate(-180deg);
    -moz-transform: rotate(-180deg);
    -ms-transform: rotate(-180deg);
    -o-transform: rotate(-180deg);
    transform: rotate(-180deg);
}
div#dialog {
    background-color: #eef;
    border-radius: 5px;
    float: left;
    padding: 2em;
}

JavaScript

$(document).ready(function () {
    $("#handle").click(function (e) {
        e.preventDefault();("#handle").click(function (e) 
        $(this).toggleClass("up down");
        $("#dialog").slideToggle();
    });
});