漏了一个css

index.html

@@ -8,7 +8,7 @@
 </head>
 <script src="https://cdn.staticfile.org/jquery/1.11.0/jquery.min.js"></script>
 <script src='https://api.tiles.mapbox.com/mapbox-gl-js/v2.1.1/mapbox-gl.js'></script>
-
+<link href='https://api.tiles.mapbox.com/mapbox-gl-js/v2.1.1/mapbox-gl.css' rel='stylesheet' />
 <link href="assets/css/main.min.css" rel="stylesheet" />
 <script src="assets/js/main.min.js"></script>
 <style>