diff --git a/src/assets/style/theme/theme.scss b/src/assets/style/theme/theme.scss
index d1d22f2d..6677f9fa 100644
--- a/src/assets/style/theme/theme.scss
+++ b/src/assets/style/theme/theme.scss
@@ -39,7 +39,7 @@
   }
   
   // 顶栏
-  .el-header.d2-theme-header {
+  .d2-theme-header {
     // 切换按钮
     .toggle-aside-btn {
       i {