diff --git a/src/features/online-board/components/details-panels/FlightDetailsAccordion.scss b/src/features/online-board/components/details-panels/FlightDetailsAccordion.scss
index e90ec5b5..df3e3d1d 100644
--- a/src/features/online-board/components/details-panels/FlightDetailsAccordion.scss
+++ b/src/features/online-board/components/details-panels/FlightDetailsAccordion.scss
@@ -3,8 +3,10 @@
 .flight-details-accordion {
   margin-top: 16px;
 
+  // Mirrors Angular `board-details.scss` divider between accordion
+  // tabs: a 1.3px dotted hairline (#D1DCEA), not a solid 1px border.
   .p-accordion-tab {
-    border-top: 1px solid colors.$border;
+    border-top: 1.3px dotted colors.$border;
     overflow: hidden;
   }