JSFiddle - React, Tailwind, and code Playground

HTML

<span id="nav"><a href="#">HOME</a>
    <a href="#">ABOUT</a>
    <a href="#">EXPERTISE</a>
    <a href="#">PAGE1</a>
    <a href="#">CONTACT</a></span>

CSS

#nav {
width:100%;
height:40px;
border-top: 1px solid transparent;
border-bottom:1px solid #ccc;
/*background-image: url("../Images/bg_head.jpg");*/
/*color: green;*/
direction: rtl;
font-family: Arial, Helvetica, sans-serif;
font-weight: normal;
background: #45484d; /* Old browsers */
background: -moz-linear-gradient(top,  #45484d 0%, #000000 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#45484d), color-stop(100%,#000000)); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top,  #45484d 0%,#000000 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top,  #45484d 0%,#000000 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top,  #45484d 0%,#000000 100%); /* IE10+ */
background: linear-gradient(to bottom,  #45484d 0%,#000000 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#45484d',   endColorstr='#000000',GradientType=0 ); /* IE6-9 */}

#nav a {
    display:inline-block;
    padding:10px;
    text-decoration:none;
    position: auto;
    color:white;
}

#nav a:hover {
    background-color:darkorange;
    cursor: pointer;
}
#nav a.active {
    background-color:darkorange !important;

}

JavaScript

$('#nav a').click(function(){
    $(this).addClass('active').siblings().removeClass('active');
  });