diff --git a/frontend/src/components/elVisualSelect/index.vue b/frontend/src/components/elVisualSelect/index.vue
index e812824b95..945fa9642e 100644
--- a/frontend/src/components/elVisualSelect/index.vue
+++ b/frontend/src/components/elVisualSelect/index.vue
@@ -237,7 +237,7 @@ export default {
 .VisualSelects {
   .el-scrollbar {
     position: relative;
-    height: 251px;
+    height: 250px;
     overflow: inherit;
     overflow-x: hidden;
     content-visibility: auto;
@@ -269,4 +269,7 @@ export default {
 .select-all {
   padding: 10px 20px 0 20px;
 }
+.coustom-de-select {
+  z-index: 999 !important;
+}
 </style>