JSFiddle - React, Tailwind, and code Playground

HTML

<style type="text/css">
    ul {
        font-family: Arial, Verdana;
        font-size: 14px;
        margin: 0;
        padding: 0;
        list-style: none;
    }
    ul li {
        display: block;
        position: relative;
        float: left;
    }
    li ul {
        display: none;
    }
    ul li a {
        display: block;
        text-decoration: none;
        color: #ffffff;
        border-top: 1px solid #ffffff;
        padding: 5px 15px 5px 15px;
        background: #1e7c9a;
        margin-left: 1px;
        white-space: nowrap;
    }
    ul li a:hover {
    background: #3b3b3b;
    }
    li:hover ul {
        display: block;
        position: absolute;
    }
    li:hover li {
        float: none;
        font-size: 11px;
    }
    li:hover a { background: #3b3b3b; }
    li:hover li a:hover {
        background: #1e7c9a;
    }
    
    </style>
    </head>
    
    <body>
    
    
    <ul id="menu">
    <li><a href="#">Home</a></li>
    <li><a href="#">Portfolio</a>
    <ul>
    <li><a href="#">Web Design</a></li>
    <li><a href="#">Graphic Design</a></li>
    <li><a href="#">Logo Design</a></li>
    <li><a href="#">Blog Design</a></li>
    </ul>
    </li>
    <li><a href="#">Projects</a>
    <ul>
    <li><a href="#">This is a project</a></li>
    <li><a href="#">So is this</a></li>
    <li><a href="#">and this</a></li>
    <li><a href="#">don't forget this too</a></li>
    </ul>
    </li>
    <li><a href="#">Contact</a>
    <ul>
    <li><a href="#">Support</a></li>
    <li><a href="#">Quote</a></li>
    <li><a href="#">General Enquiry</a></li>
    </ul>
    </li>
    </ul>