议事详情样式调整

src/views/discussion/discusionDetail.vue

@@ -253,7 +253,7 @@ export default {
     &>:nth-child(2) {
         background: url('@/assets/images/discusion/right-bg.png') no-repeat;
         background-size: 100% 100%;
-        z-index: 5;
+        z-index: 3;
     }
 }
 </style>