diff --git a/src/style/sidebar.scss b/src/style/sidebar.scss
index 7a5b395d9..e2cbc0ad4 100644
--- a/src/style/sidebar.scss
+++ b/src/style/sidebar.scss
@@ -68,10 +68,6 @@
     }
   }
 
-  .el-popper.is-light {
-    border: none !important;
-  }
-
   .sidebar-container {
     /* 展开动画 */
     transition: width var(--pure-transition-duration);