JSFiddle - React, Tailwind, and code Playground

HTML

<div id="fullwidget">
    <div class="widget-style" id="widget"><a id="widget" hef="#"> Click here for more info</a>
 <span class="arrowup">&#8593;</span>
 <span class="arrowdown">&#8595;</span>

    </div>
    <div class="contact-style" id="contact">Contact
        <hr>
        <p>More information in here</p>
        <p>And More information in here</p>
        <p>More information in here</p>
        <p>And More information in here</p>
    </div>
</div>

CSS

.widget-style {
    width: 300px;
    height: 20px;
    background-color: black;
    color: white;
    font-size: 18px;
    text-align: center;
    vertical-align: bottom;
    padding: 14px;
    cursor: pointer;
    border-radius: 0px;
    z-index: 9;
}
.contact-style {
    width: 298px;
    height: 230px;
    background-color: white;
    border: 1px solid #000;
    color: black;
    font-size: 18px;
    text-align: left;
    padding: 14px;
    cursor: pointer;
}
p {
    font-size: 14px;
}
#fullwidget {
    width: 300px;
    height: 250px;
    position: fixed;
    left: 0px;
    right: 0px;
    bottom: -201px;
    margin-left: auto;
    margin-right: auto;
    transition: 0.6s;
}
.widgetActive {
    bottom: 0px;
}

JavaScript

$(document).ready(function () {
    //&#8593; Up arrow
    //&#8595; Down arrow
    $(".arrowdown").hide();
    $(".arrowup").show();
    $("#widget").click(function () {
        $(".arrowup").toggle();
        $(".arrowdown").toggle();
        $("#fullwidget").toggleClass("widgetActive");
    });

});