JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="https://openlayers.org/en/v4.0.1/css/ol.css" type="text/css">
<style>
.map {
        height: 400px;
        width: 100%;
      }
body {font-family: "Lato", sans-serif;}

/* Style the tab */
div.tab {
    overflow: hidden;
    border: 1px solid #ccc;
    background-color: #f1f1f1;
}

/* Style the buttons inside the tab */
div.tab button {
    background-color: inherit;
    float: left;
    border: none;
    outline: none;
    cursor: pointer;
    padding: 14px 16px;
    transition: 0.3s;
    font-size: 17px;
}

/* Change background color of buttons on hover */
div.tab button:hover {
    background-color: #ddd;
}

/* Create an active/current tablink class */
div.tab button.active {
    background-color: #ccc;
}

/* Style the tab content */
.tabcontent {
    display: none;
    padding: 6px 12px;
    border: 1px solid #ccc;
    border-top: none;
}

/* Style the close button */
.topright {
    float: right;
    cursor: pointer;
    font-size: 20px;
}

.topright:hover {color: red;}
</style>
</head>
<body>

<p>Click on the x button in the top right corner to close the current tab:</p>

<div class="tab">
  <button class="tablinks" onclick="openCity(event, 'London')" id="defaultOpen">London</button>
  <button class="tablinks" onclick="openCity(event, 'Paris')">Paris</button>
  <button class="tablinks" onclick="openCity(event, 'Tokyo')">Tokyo</button>
</div>

<div id="London" class="tabcontent">
  <span onclick="this.parentElement.style.display='none'" class="topright">x</span>
  <h3>London</h3>
  <p>London is the capital city of England.</p>
</div>

<div id="Paris" class="tabcontent">
  <span onclick="this.parentElement.style.display='none'" class="topright">x</span>
  <h3>Paris</h3>
  <p>Paris is the capital of France.</p>
  <div id="map" class="map"></div>
</div>

<div id="Tokyo" class="tabcontent">
  <span onclick="this.parentElement.style.display='none'" class="topright">x</span>
  <h3>Tokyo</h3>
  <p>Tokyo is...