JSFiddle - React, Tailwind, and code Playground

HTML

<ul class="nav">
		<li class="settings">
			<a href="#!" class="link">Lorem</a>
			<a href="#!" class="link">Lorem</a>
			<a href="#!" class="link">Lorem</a>
			<a href="#!" class="link">Lorem</a>
		</li>
		<li class="chlenix">
			<a href="#!" class="link">Lorem</a>
			<a href="#!" class="link">Lorem</a>
			<a href="#!" class="link">Lorem</a>
			<a href="#!" class="link">Lorem?</a>
		</li>
		<li class="popa">
			<a href="#!" class="link">Lorem</a>
			<a href="#!" class="link">Lorem</a>
			<a href="#!" class="link">Lorem</a>
			<a href="#!" class="link">Lorem</a>
		</li>
		<li class="pizdets">
			<a href="#!" class="link">Lorem</a>
			<a href="#!" class="link">Loremь</a>
			<a href="#!" class="link">Lorem</a>
			<a href="#!" class="link">Убил бы</a>
		</li>
	</ul>
	<div class="krutota">
		какой-то важный контект
	</div>

CSS

* {
	box-sizing: border-box;
}

body {
	font-family: 'Raleway', sans-serif;
	background: rgba(255,194,183,0.8);
}

.nav {
	list-style: none;
	margin: 0;
	padding: 0;
	opacity: 0.5;
	transition: opacity 1 ease-in-out;
}

.nav:hover {
	opacity: 1;
}

.nav li {
	height: 50px;
	width: 37px;
	overflow: hidden;
	transition: all 1s ease-in-out;
}


.nav li:hover {
	width: 200px;
	height: 185px;
	transition: all 1s ease-in-out;
}

.link {
	display: block;
	text-decoration: none;
	color: black;
	background: #bbb;
	width: 200px;
	height: 40px;
	margin: 3px;
	line-height: 40px;
	padding-left: 15px;
	transition: all 0.3s ease-in-out;
	position: relative;
}

.link:hover {
	background: #AE81E7;
}

.link:first-child {
	font-size: 1.3em;
	height: 50px;
	line-height: 50px;
	text-indent: 20px;
	position: relative;
}

.link:first-child::before {
	content: '';
	position: absolute;
	display: block;
	height: 32px;
	width: 32px;
	top:9px;
	left: 0;
}

.settings .link:first-child::before {
	background: url(http://www.defaulticon.com/images/icons32x32/zoom-out.png?itok=EDadaDHr) center no-repeat;
}

.chlenix .link:first-child::before {
	background: url(http://www.defaulticon.com/images/icons32x32/target.png?itok=s4Q6Ht5f) center no-repeat;
}

.popa .link:first-child::before {
	background: url(http://www.defaulticon.com/images/icons32x32/view.png?itok=c5tn2A_w) center no-repeat;
}

.pizdets .link:first-child::before {
	background: url(http://www.defaulticon.com/images/icons32x32/web.png?itok=cN_vYlrD) center no-repeat;
}


.krutota {
	border: 5px solid black;
	width: 500px;
	height: 500px;
	background: orange;
}