JSFiddle - React, Tailwind, and code Playground

HTML

<section class="nav-btn">
  <div class="container">
    <div class="nav">
      <ul>
        <li><a class="h" href="#"><span>01</span>intro</a></li>
        <li><a class="h" href="#"><span>02</span>work</a></li>
      </ul>
    </div>
  </div>
</section>

CSS

/*
	nav button
*/
.nav-btn {
	position: relative;
	background-color: #000;  
	background-position: center center;
	-webkit-background-size: cover;
	background-size: cover;
	overflow: hidden;
	text-align: center;
	z-index: 0;
	padding: 90px 0 0;

	
}

.nav-btn .nav li:before {
	content: "";
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	transition: opacity 300ms; 
	background: linear-gradient(to top, rgba(252,227,138,.9), rgba(243,129,129,.9));
	z-index: -1;
	opacity: 0;
}
.nav-btn .nav li:hover:before {
	opacity: 0.9;
}

.nav-btn .nav {
	list-style-type: none;
	margin: 0 -15px;
	padding: 0;
	font-size: 0;
	line-height: 0;

	width: 100%;
	padding: 0 0 18px;
}
/*.nav-btn {
	padding-top: 140px;
}*/

.nav-btn .nav li{
	display: inline-block;
	width: 25%;
	font-size: 18px;
	line-height: 22px;
	font-family: 'Montserrat', sans-serif;
	font-weight: 400;
	text-transform: uppercase;
	color: #fff;
	padding: 0 15px;
	text-align: left;
}

.nav-btn .nav li a{
	position: relative;
	display: block;
	padding: 22px 0;

	text-shadow: 1px 1px 3px rgba(0,0,0,.4);
	text-decoration: none;
	color: white;
	padding-left: 150px;
	text-align: left;
}
.nav-btn .nav li a:before{
	content: "";
	position: absolute;
	top: 0;
	left: 0;
	background: #fff;
	height: 3px;
	width: 100%;
	opacity: 0.5;
	-webkit-transition: all .3s;
	-o-transition: all .3s;
	transition: all .3s;
}

.nav-btn .nav li a:after{
	content: "";
	position: absolute;
	top: 0;
	left: 0;
	background: #f38181;
	height: 3px;
	width: 25%;
	opacity: 0;
	-webkit-transition: all .3s;
	-o-transition: all .3s;
	transition: all .3s;
}

.nav-btn .nav li a:hover:before{
	opacity: 1;
}
.nav-btn .nav li a:hover:after{
	opacity: 1;
}
.nav-btn .nav li span{
	font-size: 24px;
	line-height: 28px;
	font-family: 'Montserrat', sans-serif;
	font-weight: 700;
}