JSFiddle - React, Tailwind, and code Playground

HTML

<ul id="menu" class="nav-menu">
    <li>Home</li>
    <li id="top-menu"><a href="#">About Us</a>
    </li>
    <ul id="submenu" class="sub-menu non-active">
        <li>Ashley + David</li>
        <li>Our Style</li>
        <li>The Experience</li>
    </ul>
    <li id="top-menu"><a href="#">Galleries</a>
    </li>
    <ul id="submenu" class="sub-menu non-active">
        <li>Weddings</li>
        <li>Engagements</li>
        <li>Featured Weddings</li>
    </ul>
    <li id="top-menu"><a href="#">The Details</a>
    </li>
    <ul id="submenu" class="sub-menu non-active">
        <li>Investment</li>
        <li>Press and Awards</li>
        <li>Testimonials</li>
    </ul>
    <li>FAQ</li>
    <li>Contact</li>
    <li>The Blog</li>
</ul>

CSS

.nav-menu {
    list-style-type:none;
    text-align:center;
    text-transform:uppercase;
    font-weight:bold;
    font: 24px'Playfair Display', Georgia, serif;
}
.navmenu ul li {
    margin:30px;
}
.non-active {
    display:none;
}
.active {
    display:inline;
}

JavaScript

$('#top-menu').hover(
  function () {
    $('#submenu').show();
  },
  function () {
    $('#submenu').hide();
  }
);