JSFiddle - React, Tailwind, and code Playground

HTML

<div id="menu">
    <ul>
        <li id="logo"></li>
        <li><a href="#item-1" class="first">Item 1</a></li>
        <li><a href="#item-2">Item 2</a></li>
        <li><a href="#item-3">Item 3</a></li>
        <li><a href="#item-4">Item 4</a></li>
        <li><a href="#item-5">Item 5</a></li>
    </ul>
</div>

CSS

#menu {
    background: #5a5a5a;
    height: 100px;
    left: 0px;
    position: fixed;
    top: 50px;
    width: 100%;
}

#menu ul {
    list-style: none;
    margin: 0px;
}

#menu li {
    border-right: 1px solid #c6c6c6;
    height: 100px;
    float: left;
}

#menu ul li a {
    color:#fff;
    padding: 0 25px;
    height: 100px;
    display: block;
    text-decoration:none;
    
    /* Height * 2 - font size */
    line-height: 188px;
    font-size: 12px;
}

#menu ul li a:hover {
    background:#c6c6c6;
    color:#fff;
}