JSFiddle - React, Tailwind, and code Playground

HTML

<div>
<nav>
    <ul>
        <li><a href="#">Home</a>

        </li>
        <li><a href="#">Our Company</a>

        </li>
        <li><a href="#">Services</a>

        </li>
        <li><a href="#">Contact Us</a>

        </li>
    </ul>
</nav>
</div>

CSS

div {
    
}
nav ul {
    background-color: rgba(1,70,125,0.5);
    margin-top: 60px;
    padding: 25px 25px 25px 25px;
    float: right;
    text-transform: uppercase;
}
nav ul li {
    list-style: none;
    float: left;
    font-size:15px;
    padding-right:57px;
}
nav ul li a {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    display: block;
    color: #000;
    text-decoration: none;
    padding:10px 25px 10px;
   
    /*font-weight: bold;*/
    /*padding-right: 57px;*/
}
nav ul li a:hover {
    background: #00335a;
    color: #fff;
     border-radius:2px;
}
header nav ul li a:active {
    -webkit-box-shadow: 0 0 5px rgba(0, 0, 0, 0.8) inset;
    -moz-box-shadow: 0 0 5px rgba(0, 0, 0, 0.8) inset;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.8) inset;
}