JSFiddle - React, Tailwind, and code Playground

HTML

<nav class="navbar navbar-default fixed">
    <div class="container-fluid">
        <!-- Brand and toggle get grouped for better mobile display -->
        <div class="navbar-header">
            <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1"> <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="#">Brand</a>

        </div>
        <!-- Collect the nav links, forms, and other content for toggling -->
        <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
            <ul class="nav navbar-nav">
                <li class="active"><a href="#">Link <span class="sr-only">(current)</span></a>

                </li>
                <li><a href="#">Link</a>

                </li>
                <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">Dropdown <span class="caret"></span></a>

                    <ul class="dropdown-menu" role="menu">
                        <li><a href="#">Action</a>

                        </li>
                        <li><a href="#">Another action</a>

                        </li>
                        <li><a href="#">Something else here</a>

                        </li>
                        <li class="divider"></li>
                        <li><a href="#">Separated link</a>

                        </li>
                        <li class="divider"></li>
                        <li><a href="#">One more separated link</a>

                        </li>
                    </ul>
                </li>
            </ul>
            <form class="navbar-form navbar-left" role="search">
                <div class="form-group">
                    <input type="text" class="form-control" placeholder="Search">
                </div>
      ...

CSS

#shownav {
    height: 20px;
}
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    opacity: 1;
    -webkit-transition: opacity 0.5s ease-in-out;
    -moz-transition: opacity 0.5s ease-in-out;
    -ms-transition: opacity 0.5s ease-in-out;
    -o-transition: opacity 0.5s ease-in-out;
    transition: opacity 0.5s ease-in-out;
}
.navbar.hideme {
    opacity: 0;
}

JavaScript

//Navbar Hide On Scroll

(function ($) {
    $(document).ready(function () {

        // hide .navbar first
        $(".navbar").addClass('hideme');

        // fade in .navbar
        $(function () {
            $(window).scroll(function () {
                // set distance user needs to scroll before we fadeIn navbar
                if ($(this).scrollTop() > 100) {
                    $('.navbar').removeClass('hideme');
                } else {
                    $('.navbar').addClass('hideme');
                }
            });
        });
    });
}(jQuery));

/* Show navbar */

$(function () {
    $('#shownav').hover(function () {
        $('.navbar').removeClass('hideme');
    });
});

/* when navbar is hovered over it will override previous */

$(function () {
    $('.navbar').hover(function () {
        $('.navbar').removeClass('hideme');
    }, function () {
        $('.navbar').addClass('hideme');
    });
});