优化移动端UI

docs/mobile.html

@@ -4,7 +4,8 @@
 <head>
     <meta charset="UTF-8" />
     <title>Artplayer.js</title>
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <meta name="viewport"
+        content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no">
     <meta http-equiv="X-UA-Compatible" content="ie=edge" />
     <meta name="keywords" content="artplayer, player, js, html5, video" />
     <meta name="description" content="ArtPlayer.js is a modern and full featured HTML5 video player" />
@@ -16,6 +17,7 @@
 <body>
     <div class="container">
         <div class="artplayer-app"></div>
+        <p class="tip"></p>
     </div>
     <script src="https://cdn.bootcss.com/vConsole/3.2.0/vconsole.min.js"></script>
     <script src="./uncompiled/artplayer.js"></script>
@@ -40,4 +42,4 @@
     </script>
 </body>
 
-</html>
+</html>