JSFiddle - React, Tailwind, and code Playground

HTML

<div id="container">
    <div id="slidable"class="hide"><b>무엇을 도와드릴까요?</b><br>도움이 필요하세요?</div>
    <div id="side">Help</div>
</div>

CSS

#side{
    float:right;
    width:50px;
    height:50px;
  background: #428D9B;
}

.hide{
    display:none;
}

#slidable{
    float:left;
    height:50px;
    background:#F4F4F4
    width:200px;
}

JavaScript

jQuery(document).ready(function($) {
    $( "#side" ).click(function() {
      $( "#slidable" ).animate({width: 'toggle'});
      });
  });