JSFiddle - React, Tailwind, and code Playground

HTML

<ul class="tabs">
    <li><a href="#tab1"> Tab 1</a></li>
    <li><a href="#tab2"> Tab 2</a></li>
</ul>

<div class="tab_container">
    <div id="tab1" class="tab_content">
       tab content 1
    </div>
    <div id="tab2" class="tab_content">
      tab content 2
    </div>
</div>

CSS

ul.tabs {
	margin: 0;
	padding: 0;
	float: left;
	list-style: none;
	height: 32px;
	border-bottom: 1px solid #999;
	border-left: 1px solid #999;
	width: 100%;
}
ul.tabs li {
	float: left;
	margin: 0;
	padding: 0;
    list-style: none;
	height: 31px; 
	line-height: 31px; 
	border: 1px solid #999;
	border-left: none;
	margin-bottom: -1px; 
	overflow: hidden;
	position: relative;
	background: #e0e0e0;
}
ul.tabs li a {
	text-decoration: none;
	color: #000;
	display: block;
	font-size: 1.2em;
	padding: 0 20px;
	border: 1px solid #fff; 
	outline: none;
}
ul.tabs li a:hover {
	background: #ccc;
}
html ul.tabs li.active, html ul.tabs li.active a:hover  { 
	background: #fff;
	border-bottom: 1px solid #fff; 
}

.tab_container {
	border: 1px solid #999;
	border-top: none;
	overflow: hidden;
	clear: both;
	float: left; width: 100%;
	background: #fff;
}
.tab_content {
	padding: 20px;
	font-size: 1.2em;
}

JavaScript

jQuery.noConflict();
jQuery(document).ready(function($) {
	$(".tab_content").hide(); 
	$("ul.tabs li:first").addClass("active").show();
	$(".tab_content:first").show(); 
	$("ul.tabs li").click(function() {
		$("ul.tabs li").removeClass("active"); 
		$(this).addClass("active"); 
		$(".tab_content").hide(); 
		var activeTab = $(this).find("a").attr("href"); 
		$(activeTab).fadeIn();
		return false;
	});
});