JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
    <nav role="navigation" class="navbar navbar-default navbar-fixed-top">
        <div class="container">
            <!-- Brand and toggle get grouped for better mobile display -->
            <div class="navbar-header">
                <button type="button" data-target="#navbarCollapse" data-toggle="collapse" class="navbar-toggle">
                    <span class="sr-only">Toggle navigation</span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                </button>
                <a href="index.html" class="navbar-brand">
                    <img src="https://upload.wikimedia.org/wikipedia/commons/4/48/EBay_logo.png" alt="Logo">
                </a>
            </div>
            <!-- Collection of nav links and other content for toggling -->
            <div id="navbarCollapse" class="collapse navbar-collapse">
                <ul class="nav navbar-nav navbar-right">
                    <li class="active"><a href="index.html">Home</a></li>
                    <li><a href="consulting.html">CONSULTING</a></li>
                    <li><a href="devices.html">Medical Devices</a></li>
                    <li><a href="">Servises</a></li>
                    <li><a href="">News</a></li>
                    <li><a href="">Contact Us</a></li>
                </ul>
            </div>
        </div>
    </nav>

CSS

.navbar-brand > img {
  width: 100px;
}
.navbar-default {
	background-color: #fff;
	border-color: #fff;
	-webkit-box-shadow: 0 0 3px rgba(0,0,0,.3);
	box-shadow: 0 0 3px rgba(0,0,0,.3);
}

.navbar-default .navbar-nav > li > a {
	color: #464646;
	text-transform: uppercase;
} 

.navbar-default .navbar-nav > li > a:hover ,
.navbar-default .navbar-nav > li > a:focus ,
.navbar-default .navbar-nav > li > a:active {
    color: #727272;
}

.navbar-default .navbar-nav > li:not(.active) > a:before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 30%;
    right: 30%;
    height: 1px;
    background: #ed1c24;
    opacity: 0;
    -webkit-transform: translateY(10px);
    -ms-transform: translateY(10px);
    -o-transform: translateY(10px);
    transform: translateY(10px);
    -webkit-transition: all .3s;
    -o-transition: all .3s;
    transition: all .3s;
}

.navbar-default .navbar-nav > li > a:hover:before {
    opacity: 1;
    -webkit-transform: none;
    -ms-transform: none;
    -o-transform: none;
    transform: none;
} 

.navbar-default .navbar-nav > li:first-child > a {
	font-weight: 700;
}

.navbar-default .navbar-nav > li.active > a {
	background: #ed1c24;
	color: #fff;
	padding-top: 25px;
	padding-bottom: 25px;
	position: relative;
    -webkit-transition: all .3s;
    -o-transition: all .3s;
    transition: all .3s;
}

.navbar-default .navbar-nav > li.active > a:hover,
.navbar-default .navbar-nav > li.active > a:focus,
.navbar-default .navbar-nav > li.active > a:active {
    background: #e0222a;
    color: #fff;
}

.navbar-default .navbar-nav > li.active:hover > a:after {
    bottom: 0;
}

.navbar-default .navbar-nav > li.active > a:after {
    font-family: FontAwesome;
	content: '\f078';
	position: absolute;
	bottom: 5px;
	font-size: 0.6em;
	/*opacity: 0.8;*/
	left: 50%;
	-webkit-transform: translateX(-50%);
	-ms-transform: translateX(-50%);
	-o-transform: translateX(-50%);
	transform: translateX(-50%);
    -webkit-transition: all .3s;
   ...