feat:webapp域名

src/components/weapp.vue

@@ -9,7 +9,7 @@
     @error="launchError"
   >
     <script type="text/wxtag-template">
-      <style>.btn {height: 100%}</style>
+      <style>.btn {position: absolute;top: 0;left: 0;width: 100%;height: 100%;}</style>
       <div class="btn">打开小程序</div>
     </script>
   </wx-open-launch-weapp>