diff --git a/assets/scss/_boxes.scss b/assets/scss/_boxes.scss
index 084bff9fed..6c27d4394f 100644
--- a/assets/scss/_boxes.scss
+++ b/assets/scss/_boxes.scss
@@ -120,8 +120,8 @@
 // Single dark-mode compatibility override for white boxes:
 @include color-mode(dark) {
   .td-box--white {
-    color: var(--bs-body-color) !important;
-    background-color: var(--bs-body-bg) !important;
+    color: var(--bs-body-color);
+    background-color: var(--bs-body-bg);
     p > a, span > a {
       color: var(--bs-link-color);
       &:focus,
@@ -129,5 +129,8 @@
         color: rgba(var(--bs-link-color-rgb), var(--bs-link-opacity, 1));
       }
     }
+    .td-arrow-down::before {
+      border-color: var(--bs-body-bg) transparent transparent transparent;
+    }
   }
 }