JSFiddle - React, Tailwind, and code Playground

by Shanid

HTML

<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
      <nav id="nav-wrapper" class="navbar navbar-default navbar-fixed-top" role="navigation">
        <div class="container">
          <!-- Brand and toggle get grouped for better mobile display -->
          <div class="navbar-header">
            <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar-top">
              <span class="sr-only">Toggle navigation</span>
              <span class="icon-bar"></span>
              <span class="icon-bar"></span>
              <span class="icon-bar"></span>
            </button>
            <a class="navbar-brand" href="index.php"><img src="/img/logo.png" alt="shattow"><!-- <span>The Shattow Group</span> --></a>
          </div>

          <!-- Collect the nav links, forms, and other content for toggling -->
          <div class="collapse navbar-collapse" id="navbar-top">
            <ul class="nav navbar-nav navbar-right">
             <!--  <li><a href="/">Home</a></li>  -->
              <li class="dropdown">
                <a href="#" class="dropdown-toggle" data-toggle="dropdown">Cities <b class="caret"></b></a>
                <ul class="dropdown-menu">
                  <li><a href="search.php">West Palm Beach</a></li>
                  <li><a href="search_list.html">Jupiter</a></li>
                  <li><a href="category.php">Boca Raton</a></li>
                  <li><a href="category_list.html">Wellington</a></li>
                  <li><a href="single.html">Palm Beach</a></li>
                </ul>
              </li>
              <li><a href="/about.php" class="dropdown-toggle" data-toggle="dropdown">About </a></li>
              <li><a href="/contact.php" class="dropdown-toggle" data-toggle="dropdown">Contact </a></li>
              
              <? if (!isset($_SESSION['loggedin'])) { ?>
     ...

CSS

.navbar-default{
	/* background-color: #1b1d2a;  */
  background-color: rgba(70,103,26,0.1);
	border-color: #1b1d2a;
}

JavaScript

$(document).on('scroll', function (e) {

     var alpha = $(document).scrollTop() / 550;

            $('.navbar-default').css('background-color', 'rgba(70,103,26,' + alpha + ')');
  });