JSFiddle - React, Tailwind, and code Playground

HTML

<ul class="sf-menu">
    <li>	<a href="#">About Us &#9660;</a>

        <ul>
            <li> <a href="">Centre-Point of Web Projects</a>

            </li>
        </ul>
    </li>
    <li>	<a href="">Branches &#9660;</a>

        <?php Core::getHook( 'block-branches'); ?>
    </li>
    </u>

CSS

/* Main */
 .sf-menu {
    width: 100%;
    margin: 0;
    list-style: none;
    background-color: #2D2D2D;
    border-bottom:6px solid #393939;
    z-index: 90;
    /*background-image: linear-gradient(#444, #111);*/
    /*border-radius: 50px;*/
    /* box-shadow: 0 2px 1px #9c9c9c;*/
}
.sf-menu .active {
    background-color:#1B3E70;
    color:white;
}
.sf-menu li {
    float: left;
    padding: 10px 0;
    margin: 0 0 0 2px;
    position: relative;
    box-shadow: 1px 0 #222222, 2px 0 #383838;
    z-index: 100;
}
.sf-menu a {
    float: left;
    height: 20px;
    padding: 0 25px;
    color: #DDDDDD;
    /* text-transform: uppercase;*/
    font: bold 12px/25px Arial, Helvetica;
    text-decoration: none;
    text-shadow: 0 1px 0 #000;
}
.sf-menu li:hover > a {
    color: #fafafa;
}
*html .sf-menu li a:hover {
    /* IE6 */
    color: #fafafa;
}
.sf-menu li:hover > ul {
    display: block;
}
.sf-menu li:last-child {
    box-shadow: none;
}
/* Sub-menu */
 .sf-menu ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: none;
    position: absolute;
    top: 35px;
    left: 0;
    z-index: 99999;
    background-color: #2D2D2D;
    border-bottom:none;
    /* background-image: linear-gradient(#444, #111);   */
    /*-moz-border-radius: 5px;*/
    /*border-radius: 5px;*/
}
.sf-menu ul li {
    float: none;
    margin: 0;
    padding: 0;
    display: block;
    box-shadow: 0 1px 0 #222222, 0 2px 0 #383838;
    border-bottom:none;
}
.sf-menu ul a {
    padding: 10px;
    height: auto;
    line-height: 1;
    display: block;
    white-space: nowrap;
    float: none;
    text-transform: none;
}
.sf-menu ul a:hover {
    margin-left:10px;
}
*html .sf-menu ul a {
    /* IE6 */
    height: 10px;
    width: 150px;
}
*:first-child+html .sf-menu ul a {
    /* IE7 */
    height: 10px;
    width: 150px;
}
/* active  menu*/

/*end */
 .sf-menu ul a:hover {
    /*background-color: #0186ba;
    background-image: linear-gradient(#04acec, #0186ba);*/
}
.sf-menu ul...

JavaScript

$('.sf-menu a').click(function (e) {
        $('.sf-menu a').removeClass('active');
        $(this).addClass('active')
        e.preventDefault()
    });