und-color: #000;
        }

    </style>
</head>

<body>
    <div id="map"></div>
    <script>
        var map = new maptalks.Map("map", {
            center: [122.05868611616324, 37.38234727127778],
            zoom: 16,
            pitch: 60,
            centerCross: true,
            doubleClickZoom: false,
            baseLayer: new maptalks.TileLayer('tile', {
                urlTemplate: 'https://{s}.basemaps.cartocdn.com/dark_all/{z}/{x}/{y}.png',
                subdomains: ['a', 'b', 'c', 'd'],
   