JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html>
<head>
    <title>WebGL</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <style>
      html, body, #map {
        width: 100%;
        height: 100%;
        margin: 0;
      }
    </style>

    <!-- Leaflet -->
    <link rel="stylesheet" href="https://unpkg.com/[email protected]/dist/leaflet.css" />
    <script src="https://unpkg.com/[email protected]/dist/leaflet.js"></script>

    <!-- Mapbox GL -->
    <link href="https://api.tiles.mapbox.com/mapbox-gl-js/v1.2.0/mapbox-gl.css" rel='stylesheet' />
    <script src="https://api.tiles.mapbox.com/mapbox-gl-js/v1.2.0/mapbox-gl.js"></script>

</head>

<body>
<div id="map"></div>

<script src="https://unpkg.com/mapbox-gl-leaflet/leaflet-mapbox-gl.js"></script>
<script>
var map = L.map('map').setView([42.45, -83.2], 15);
L.marker([42.45, -83.2])
    .bindPopup("Hello <b>Leaflet GL</b>!<br>Whoa, it works!")
    .addTo(map)
    .openPopup();
//add the labels
var gl_labels = new L.MapboxGL({
    accessToken: 'pk.eyJ1Ijoic2VtY29nIiwiYSI6ImlvNEFUcmMifQ.VmDLZZG7l6syscFzkBs5eg',
    style: 'mapbox://styles/semcog/cje93r8vr0flv2sqsyzi99oib',
}).addTo(map);
//add an imagery basemap
var gl = L.mapboxGL({
    accessToken: 'pk.eyJ1Ijoic2VtY29nIiwiYSI6ImlvNEFUcmMifQ.VmDLZZG7l6syscFzkBs5eg',
    style: 'mapbox://styles/semcog/cjpn2nkq42exg2qo56dt8fc33'
}).addTo(map);


</script>
</body>
</html>