JSFiddle - React, Tailwind, and code Playground

HTML

<!-- main Container -->
<div class="main-wrapper">
    <!-- Header -->
    <div class="header-wrapper">

        <!-- Menu -->
        <div class="menu-wrapper">
            <div class="navbar">                             
                    <nav id="menu" class="menu">
                        <ul>
						<li><a href="en/1/1/Home">Home</a></li>
						<li class="has-submenu"><a href="#">Chairman</a>
							<ul class="has-submenu">
								<li><a href="en/page/1/3/">Parent Menu</a></li>
								<li><a href="en/page/1/4/">Child Menu</a></li>
								<li><a href="en/page/1/5/">Child Menu</a></li>
								<li><a href="en/page/1/6/">Child Menu</a></li>
							</ul>
						</li>
						<li><a href="en/page/1/7/">Parent menu</a></li>
						<li class="has-submenu"><a href="#">Parent Menu 2</a>
							<ul class="has-submenu">
								<li><a href="en/page/1/9/">Child Menu 2</a></li>
								<li><a href="en/page/1/10/">Child Menu 2</a></li>
							</ul>
						</li>
						<li><a href="en/page/1/25/">Contact</a></li></ul>  
                    </nav>                                       
           </div>
        </div>
        <!-- Menu -->
     </div>
     <!-- Header -->

</div>
<!-- main Container -->

CSS

.menu-wrapper
{
    height:30px;
}
.navbar
{
    background-color:Green;
    margin-left:250px;
}


/* CSS FOR MENU */
.menu  
{ 
    /*  font-family:'Open Sans', sans-serif; font-family: 'Roboto', sans-serif;*/
    font-size:13px;
	font-weight:400;
	color: #687074;
	float: left; 
	max-width: 60em;
	border:0px solid red;

}
.menu ul  
{
    z-index:500;
	padding: 0px;
	margin: 0px;
	list-style: none;
	position: relative;
	display: inline-table;
}
.menu > li > ul.sub-menu {
	min-width: 10em;
	padding: 4px 0;
	background-color: #f4f4f4;
	border: 0px solid #CCC;
	border: 0px solid rgba(0, 0, 0, 0.2);
	-webkit-border-radius: 5px;
	-moz-border-radius: 5px;
	border-radius: 5px;
	-webkit-box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
	-moz-box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
	box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
	-webkit-background-clip: padding-box;
	-moz-background-clip: padding;
	background-clip: padding-box;
	
}
.menu ul:after {
	content: ""; clear: both; display: block;
}
.menu ul li {
	padding: 0px;
}
.menu > ul > li { 
	display: inline-block;
}
.menu ul li a { 
	display: block;
	text-decoration: none;
	color: #687074; /* link color*/
}
.menu ul li a:hover { 
	display: block;
	text-decoration: none;
	color: #028F41; /* link color hover*/
}
.menu ul li > a  
{
    color:#687074;
	padding: 5px 12px;	
}
.menu ul ul { 
	display: none; 
	position: absolute; 
	top:100%;
	min-width: 160px;
	border: 0px solid #CCC;
	border: 0px solid rgba(0, 0, 0, 0.2);
	-webkit-box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
	-moz-box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
	box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
}
.menu ul li:hover > ul {
	display: block;
}
.menu ul ul > li {
	position: relative;
}
.menu ul ul > li a {
	padding: 5px 15px 5px 10px;
	height: auto;
	background-image:url("../images/nav-dd-background.png"); 
    color:#000;
	/*-webkit-transition: background-color 0.2s ease-out;  
	-moz-transition: background-color 0.2s ease-out;
	-ms-transition: background-color 0.2s...