JSFiddle - React, Tailwind, and code Playground

HTML

<div class="nav-wrap">
						<ul class="navigation-bar">
							<li><a href="#">Home</a></li>
							<li><a href="#">News</a></li>
							<li><a href="#">Events</a></li>
							<li>
								<a href="#">DESC Squad</a>
								<ul>
									<li><a href="#">Swim Squad</a></li>
									<li><a href="#">Waterpolo</a></li>
								</ul>
							</li>
							<li>
								<a href="#">DESS Squad</a>
								<ul>
									<li><a href="#">Swim Squad</a></li>
									<li><a href="#">Waterpolo</a></li>
								</ul>
							</li>
							<li><a href="#">Resources</a></li>
							<li><a href="#">Contact</a></li>
						</ul>
					</div>

CSS

.nav-wrap {
	background-color: #125CC1;
	text-align: center;
}
ul.navigation-bar {
	list-style-type: none;
	margin: 0;
	padding: 0;
	overflow: hidden;
}
ul.navigation-bar > li {
	display: inline;
}
ul.navigation-bar > li > a {
	display: inline-block;
	width: 120px;
	font-weight: bold;
	color: #FFFFFF;
	background-color: #125CC1;
	text-align: center;
	padding: 4px;
	font-size: 12px;
	text-decoration: none;
	text-transform: uppercase;
	-webkit-transition: all 0.15s linear;
	-moz-transition: all 0.15s linear;
	-o-transition: all 0.15s linear;
	transition: all 0.15s linear;
}
ul.navigation-bar > li > a:hover {
	background-color: #06398F;
}

ul.navigation-bar ul {
	display: none;
}
ul.navigation-bar li:hover > ul {
	display: block;
}