预览ppt图标层级调整

src/views/hzyb/report/ChapterDetail.vue

@@ -584,6 +584,7 @@ export default {
             right: 34px;
             width: 100px;
             height: 100px;
+            z-index: 50;
         }
     }
 

src/views/hzyb/report/Detail.vue

@@ -626,6 +626,7 @@ export default {
             right: 34px;
             width: 100px;
             height: 100px;
+            z-index: 50;
         }
     }