diff --git a/app/src/assets/scss/protyle/_wysiwyg.scss b/app/src/assets/scss/protyle/_wysiwyg.scss
index 9966d557a..5b3db9209 100644
--- a/app/src/assets/scss/protyle/_wysiwyg.scss
+++ b/app/src/assets/scss/protyle/_wysiwyg.scss
@@ -421,20 +421,21 @@
   }
 
   .dragover {
+    // 需要 !important，否则拖拽到闪卡无 border
     &__top {
-      box-shadow: 0 -4px 0 var(--b3-theme-primary-lighter);
+      box-shadow: 0 -4px 0 var(--b3-theme-primary-lighter) !important;
     }
 
     &__bottom {
-      box-shadow: 0 4px 0 var(--b3-theme-primary-lighter);
+      box-shadow: 0 4px 0 var(--b3-theme-primary-lighter) !important;
     }
 
     &__left {
-      box-shadow: -4px 0 0 var(--b3-theme-primary-lighter);
+      box-shadow: -4px 0 0 var(--b3-theme-primary-lighter) !important;
     }
 
     &__right {
-      box-shadow: 4px 0 0 var(--b3-theme-primary-lighter);
+      box-shadow: 4px 0 0 var(--b3-theme-primary-lighter) !important;
     }
   }