feat:开放标签遮罩全屏

src/components/weapp.vue

@@ -3,7 +3,7 @@
 羊小咩原始ID：gh_a976018bfb9e -->
   <wx-open-launch-weapp
     class="launch-btn"
-    username="gh_e1d790d67513"
+    username="gh_a976018bfb9e"
     :path="newJumpUrl"
     @launch="launch"
     @error="launchError"
@@ -65,7 +65,7 @@ export default {
 </script>
 <style lang="less">
 .launch-btn {
-  position: absolute;
+  position: fixed;
   top: 0;
   bottom: 0;
   width: 100%;