JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&amp;sensor=false"></script>
<link rel="stylesheet" href="http://xii.com.au/pubmap/css/willypubs.css">
<h1>Pubs</h1>

<div class="subhead">
    <div class="tags">
        <ul>
            <li class="current">
                <label>
                    <input type="checkbox" name="filter" value="all">All &nbsp;</label>
            </li>
            <li>
                <label>
                    <input type="checkbox" name="filter" value="craft-beer">Craft Beer &nbsp;</label>
            </li>
            <li>
                <label>
                    <input type="checkbox" name="filter" value="beer-garden">Beer Garden &nbsp;</label>
            </li>
            <li>
                <label>
                    <input type="checkbox" name="filter" value="night-club">Night Club &nbsp;</label>
            </li>
            <li>
                <label>
                    <input type="checkbox" name="filter" value="quiz-night">Quiz Night &nbsp;</label>
            </li>
            <li>
                <label>
                    <input type="checkbox" name="filter" value="steak-night">Steak Night &nbsp;</label>
            </li>
            <li>
                <label>
                    <input type="checkbox" name="filter" value="parma-night">Parma Night &nbsp;</label>
            </li>
            <li>
                <label>
                    <input type="checkbox" name="filter" value="tab">TAB &nbsp;</label>
            </li>
            <li>
                <label>
                    <input type="checkbox" name="filter" value="live-sport">Live Sport &nbsp;</label>
            </li>
            <li>
                <label>
                    <input type="checkbox" name="filter" value="live-music">Live Music</label>
            </li>
        </ul>
    </div>
</div>
    </script>
</header>
<div id="googlemap"></div>

JavaScript

var infowindow = null;
var markerobj = [];

var sites = [
    ['Customs House Hotel', -37.86314, 144.904012, 9, '<a class="orange" href="#">Customs House Hotel</a><p>Williamstown</p><p><img src="img/stars_25.png" /></p>'],
    ['Juntions Beer Hall & Wine Bar', -37.843199, 144.883992, 1, '<a class="orange" href="#">Juntions Beer Hall & Wine Bar</a><p>Newport</p><p><img src="img/stars_45.png" /></p>'],
    ['Morning Star Hotel', -37.86426, 144.899121, 11, '<a class="orange" href="#">Morning Star Hotel</a><p>Williamstown</p><p><img src="img/stars_35.png" /></p>'],
    ['Pirates Tavern', -37.862818, 144.907381, 8, '<a class="orange" href="#">Pirates Tavern</a><p>Williamstown</p><p><img src="img/stars_3.png" /></p>'],
    ['Prince Albert Hotel', -37.853337, 144.896165, 2, '<a class="orange" href="#">Prince Albert Hotel</a><p>Williamstown</p><p><img src="img/stars_4.png" /></p>'],
    ['Rifle Club Hotel', -37.858244, 144.888843, 4, '<a class="orange" href="#">Rifle Club Hotel</a><p>Williamstown</p><p><img src="img/stars_25.png" /></p>'],
    ['Rose of Australia Hotel', -37.85892, 144.899105, 6, '<a class="orange" href="#">Rose of Australia Hotel</a><p>Williamstown</p><p><img src="img/stars_3.png" /></p>'],
    ['Stags Head Hotel', -37.8661, 144.906562, 12, '<a class="orange" href="#">Stags Head Hotel</a><p>Williamstown</p><p><img src="img/stars_35.png" /></p>'],
    ['Steam Packet Hotel', -37.863519, 144.90268, 10, '<a class="orange" href="#">Steam Packet Hotel</a><p>Williamstown</p><p><img src="img/stars_4.png" /></p>'],
    ['Victoria Inn', -37.85676, 144.897547, 3, '<a class="orange" href="#">Victoria Inn</a><p>Williamstown</p><p><img src="img/stars_25.png" /></p>'],
    ['Williamstown RSL', -37.858342, 144.894213, 5, '<a class="orange" href="#">Williamstown RSL</a><p>Williamstown</p><p><img src="img/stars_3.png" /></p>'],
    ['Yacht Club Hotel', -37.862191, 144.902608, 7, '<a class="orange" href="#">Yacht Club Hotel</a><p>Williamstown</p><p><img...