diff --git a/packages/editor-skeleton/src/layouts/workbench.less b/packages/editor-skeleton/src/layouts/workbench.less
index 97a017523..9c7a9815d 100644
--- a/packages/editor-skeleton/src/layouts/workbench.less
+++ b/packages/editor-skeleton/src/layouts/workbench.less
@@ -363,7 +363,7 @@ body {
       flex: 1;
       display: flex;
       flex-direction: column;
-      z-index: 10;
+
       .lc-toolbar {
         display: flex;
         height: var(--toolbar-height);