JSFiddle - React, Tailwind, and code Playground

by joshmoto

HTML

<script src="//code.jquery.com/jquery-3.3.1.slim.min.js"></script>
<link rel="stylesheet" href="//stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css">
<script src="//cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js"></script>
<script src="//stackpath.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
<div class="alert alert-hide alert-success mb-0 text-center" role="alert">
  I'm going to disapear in 5000ms
</div>

<nav class="navbar navbar-expand-md navbar-dark fixed-top bg-dark">
  <a class="navbar-brand" href="#">Fixed navbar</a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarCollapse" aria-controls="navbarCollapse" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
      </button>
  <div class="collapse navbar-collapse" id="navbarCollapse">
    <ul class="navbar-nav mr-auto">
      <li class="nav-item active">
        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Link</a>
      </li>
      <li class="nav-item">
        <a class="nav-link disabled" href="#">Disabled</a>
      </li>
    </ul>
    <form class="form-inline mt-2 mt-md-0">
      <input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search">
      <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
    </form>
  </div>
</nav>

<main role="main" class="container">
  <div class="jumbotron">
    <h1>Navbar example</h1>
    <p class="lead">This example is a quick exercise to illustrate how fixed to top navbar works. As you scroll, it will remain fixed to the top of your browser's viewport.</p>
    <a class="btn btn-lg btn-primary" href="../../components/navbar/" role="button">View navbar docs...

SCSS

BODY {
  min-height: 75rem;
  padding-top: 4.5rem;
  transition: padding .5s ease-in-out;
}

.navbar.fixed-top {
  transition: top .5s ease-in-out;
}

.alert {
  position: fixed;
  width: 100%;
  top: -50px;
  transition: top .5s ease-in-out;
}

BODY.alert-show {
  padding-top: calc(4.5rem + 50px);
}

BODY.alert-show .alert {
  top: 0;
}

BODY.alert-show .navbar.fixed-top {
  top: 50px;
}

JavaScript

showAlert = function() {
  $('body').addClass('alert-show');
}

hideAlert = function() {
  $('body').removeClass('alert-show');
}

// auto show
setTimeout(function() {
  showAlert();
}, 1000);

// auto hide
setTimeout(function() {
  hideAlert();
}, 5000);