修改蒙层层级样式

@@ -22,7 +22,7 @@
     left: 0;
     top: 0;
     background-color: rgba(0, 0, 0, 0.7);
-    z-index: 29;
+    z-index: 109;
 
     .web-share-tips-container {
         position: absolute;
@@ -94,7 +94,7 @@
     left: 0;
     top: 0;
     background-color: rgba(0, 0, 0, 0.7);
-    z-index: 30;
+    z-index: 109;
     background-image: url("img/activity/feature/share.png");
     background-size: contain;
     background-position: 0 50%;