From 5b906e78b2561741b9a4ca027cf5292c83377654 Mon Sep 17 00:00:00 2001
From: Maxim Belkin <maxim.belkin@gmail.com>
Date: Wed, 21 Oct 2020 21:34:27 -0700
Subject: [PATCH] lesson.scss: no borders around unrecognized code (#510)

---
 assets/css/lesson.scss | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/assets/css/lesson.scss b/assets/css/lesson.scss
index 89d5bf7..182fe3b 100644
--- a/assets/css/lesson.scss
+++ b/assets/css/lesson.scss
@@ -329,6 +329,12 @@ div.life-cycle {
     background: #d9edf7;
 }
 
+// Remove border around spans of text within code blocks
+// that the highlighter (rouge) failed to recognize.
+pre.highlight span.err {
+    border: none;
+}
+
 
 //----------------------------------------
 // keyboard key style, from StackExchange.
-- 
2.30.2