JSFiddle - React, Tailwind, and code Playground

by martinradio

HTML

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">

</head>
<body>

<div class="main-content">
  <div id="mySidebar" class="sidebar super-animation">
    <a href="javascript:void(0)" class="closebtn" onclick="closeNav()">×</a>
    <a href="#">About</a>
    <a data-ulid="expand_this" onclick="toggleMenuItem(this);" href="#">Expand This ▼</a>
      <ul id="expand_this">
        <li><a href="#">Coffee</a></li>
        <li><a href="#">Coverage</a></li>
      </ul>

    <a href="#">Clients</a>
    <a href="#">Contact</a>
  </div>

  <div id="main" class="super-animation">
    <button class="openbtn" onclick="sideNavClicked()">☰</button>  
    <h2>Collapsed Sidebar</h2>
    <p>Click on the hamburger menu/bar icon to open the sidebar, and push this content to the right.</p>
  </div>
</div>

</body>
</html>

CSS

html,
body {
  font-family: "Lato", sans-serif;
  height: 100%;
  margin: 0;
}

.super-animation{
  -webkit-transition: -webkit-transform 300ms ease;
  -webkit-transition-duration: 300ms;
  -moz-transition: -moz-transform 300ms ease;
  transition: transform 300ms ease;
}

.main-content{
  margin: 0;
  display: flex;
  position: relative;
  width: 100%;
  height: 100%;
}

.sidebar {
  height: 100%;
  max-height: calc(100% - 15px);
  width: 250px;
  position: absolute;
  z-index: 1;
  top: 0;
  left: 0;
  background-color: #111;
  overflow-x: hidden;
  padding-top: 60px;
  
  right: 0;
  -webkit-transform: translate3d(calc(-100%), 0, 0);
  -moz-transform: translate3d(calc(-100%), 0, 0);
  transform: translate3d(calc(-100%), 0, 0);
}

.sidebar.sidebar-show{
  -webkit-transform: translate3d(0, 0, 0);
  -moz-transform: translate3d(0, 0, 0);
  transform: translate3d(0, 0, 0);
}

.sidebar a {
  padding: 8px 8px 8px 32px;
  text-decoration: none;
  font-size: 25px;
  color: #818181;
  display: block;
  transition: 0.3s;
}

.sidebar a:hover {
  color: #f1f1f1;
}

.sidebar .closebtn {
  position: absolute;
  top: 0;
  right: 25px;
  font-size: 36px;
  margin-left: 50px;
}

.openbtn {
  font-size: 20px;
  cursor: pointer;
  background-color: #111;
  color: white;
  padding: 10px 15px;
  border: none;
}

.openbtn:hover {
  background-color: #444;
}

#main {
  padding: 16px;
}

#main.main-show{
  -webkit-transform: translate3d(250px, 0, 0);
  -moz-transform: translate3d(250px, 0, 0);
  transform: translate3d(250px, 0, 0);
}

.main-content .sidebar ul{
  margin: 0;
  max-height: 0px;
  overflow: hidden;
  transition: max-height 200ms ;
}

.main-content .sidebar ul.ul-show{
  transition: max-height 200ms ease-in;
  max-height: 400px;
}

/* On smaller screens, where height is less than 450px, change the style of the sidenav (less padding and a smaller font size) */
@media screen and (max-height: 450px) {
  .sidebar {padding-top: 15px;}
  .sidebar a {font-size: 18px;}
}

JavaScript

var isSidebarOpen = false;

function sideNavClicked() {
  isSidebarOpen ? closeNav() : openNav();
}

function openNav() {
  isSidebarOpen = true;
  document.getElementById('mySidebar').classList.add('sidebar-show');
  document.getElementById('main').classList.add('main-show');
}

function closeNav() {
  isSidebarOpen = false;
  document.getElementById('mySidebar').classList.remove('sidebar-show');
  document.getElementById('main').classList.remove('main-show');
}

function toggleMenuItem(element){
		console.log('toggleMenuItem')
    document.getElementById(element.dataset.ulid).classList.toggle("ul-show");
}