JSFiddle - React, Tailwind, and code Playground

HTML

<nav>
    <ul id="menu">
        <li><a href="index.html" id="selected">Home</a></li>
        <li>
            <a href="why.html">About</a>
            <ul class="hidden">
                <li><a href="why.html">Why Do It</a></li>
                <li><a href="future.html">Future Plans</a></li>
            </ul>
        </li>
        <li>
            <a href="#top">Archive</a>
            <ul class="hidden">
                <li><a href="#June">June 2015</a></li>
                <li><a href="#July">July 2015</a></li>
            </ul>
        </li>
    </ul>
</nav>

<h2>My Blog Post</h2>
<p>Some blog text...</p>

CSS

/* Strip the ul of padding and list styling */

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

/* Create a horizontal list with spacing */

nav li {
    display: inline-block;
    float: left;
    margin-right: 1px;
}

/* Style for menu links */

nav li a {
    display: block;
    min-width: 140px;
    height: 50px;
    text-align: center;
    line-height: 50px;
    color: #fff;
    background: #000;
    text-decoration: none;
}

/* Hover state for top level links */

nav li:hover a {
    background: #888888;
}

/* Style for dropdown links */

nav li:hover ul a {
    background: #f3f3f3;
    color: #2f3036;
    height: 40px;
    line-height: 40px;
}

/* Hover state for dropdown links */

nav li:hover ul a:hover {
    background: #888888;
    color: #fff;
}

/* Hide dropdown links until they are needed */

nav li ul {
    display: none;
}

/* Make dropdown links vertical */

nav li ul li {
    display: block;
    float: none;
}

/* Prevent text wrapping */

nav li ul li a {
    width: auto;
    min-width: 100px;
    padding: 0 20px;
}

/* Display the dropdown on hover */

nav ul li a:hover + .hidden, .hidden:hover {
    position: absolute;
    display: block;
}

h2 {
    clear:left;
}
}