Edit in JSFiddle 
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Multiple Styles</title>
        
        <link href="https://tiles.locationiq.com/v3/libs/leaflet/1.8.0/leaflet.css" rel="stylesheet" type="text/css"/>
        <script type="text/javascript" src="https://tiles.locationiq.com/v3/libs/leaflet/1.8.0/leaflet.js"></script>
        <script type="text/javascript" src="https://tiles.locationiq.com/v3/js/liq-styles-ctrl-leaflet.js?v=0.1.8"></script>
        
        <style type="text/css">
            body {
                margin: 0;
            }
            #map {
                width: 100vw;
                height: 100vh;
            }
        </style>
    </head>

    <body>
        <div id='map'></div>
        <!-- location control -->
        <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/leaflet.locatecontrol/dist/L.Control.Locate.min.css" />
        <script src="https://cdn.jsdelivr.net/npm/leaflet.locatecontrol/dist/L.Control.Locate.min.js" charset="utf-8"></script>
        
        <script type="text/javascript">
            // Maps access token goes here
            var key = 'pk.aa7f5d0539c5675b7f3429402939d8fa';

            // Add layers that we need to the map
            var streets = L.tileLayer.Unwired({key: key, scheme: "streets"});

            // Initialize the map
            var map = L.map('map', {
                center: [39.73, -104.99], // Map loads with this location as center
                zoom: 14,
                scrollWheelZoom: true,
                layers: [streets],
                zoomControl: false
            });

            // Define different layers
            var dark = L.tileLayer.Unwired({ key: key, scheme: "dark" });
            var light = L.tileLayer.Unwired({ key: key, scheme: "light" });

            // Add the 'zoom' control
            L.control.zoom({
                position: 'topright'
            }).addTo(map);

            // Add the 'layers' control
            L.control.layers({
                "Streets": streets,
                "Dark": dark,
                "Light": light
            }, null, {
                position: "topright"
            }).addTo(map);

            // Add the 'scale' control
            L.control.scale().addTo(map);
            L.control.locate({
                position: "bottomright"
            }).addTo(map);


            //fix for white lines in satellite view https://github.com/Leaflet/Leaflet/issues/3575#issuecomment-362230413
            (function () {
                var originalInitTile = L.GridLayer.prototype._initTile
                L.GridLayer.include({
                    _initTile: function (tile) {
                        originalInitTile.call(this, tile);

                        var tileSize = this.getTileSize();

                        tile.style.width = tileSize.x + 1 + 'px';
                        tile.style.height = tileSize.y + 1 + 'px';
                    }
                });
            })()
        </script>
    </body>
</html>