diff --git a/app/src/assets/scss/protyle/_wysiwyg.scss b/app/src/assets/scss/protyle/_wysiwyg.scss
index 9a7e2f41a..9f96dd233 100644
--- a/app/src/assets/scss/protyle/_wysiwyg.scss
+++ b/app/src/assets/scss/protyle/_wysiwyg.scss
@@ -319,9 +319,10 @@
 
       thead {
         position: sticky;
-        top: -1px;
+        top: 1px;
         z-index: 2;
-        box-shadow: 0 -1px 0 var(--b3-theme-on-surface-light) inset;
+        box-shadow: 0 -1px 0 var(--b3-border-color) inset, 0 -1px 0 0 var(--b3-border-color);
+        background-color: var(--b3-theme-background);
       }
     }