From 087d3e2281b579927f5fde1cc8baa5baf0e7cbc6 Mon Sep 17 00:00:00 2001
From: Zach Arend <zachzach@google.com>
Date: Tue, 21 Sep 2021 21:13:27 +0000
Subject: [PATCH] fix(material/expansion): fix header border in high contrast
 mode

Add a border between the header and its content when in high contrast mode.
---
 src/material/expansion/expansion-panel-header.scss | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/material/expansion/expansion-panel-header.scss b/src/material/expansion/expansion-panel-header.scss
index 4d348356280d..b0984e25fee6 100644
--- a/src/material/expansion/expansion-panel-header.scss
+++ b/src/material/expansion/expansion-panel-header.scss
@@ -92,4 +92,9 @@
       content: '';
     }
   }
+  .mat-expansion-panel-content {
+    border-top: 1px solid;
+    border-top-left-radius: 0;
+    border-top-right-radius: 0;
+  }
 }