2 files changed, 12 insertions, 1 deletions
diff --git a/source/css/theme.css b/source/css/theme.css
index 940aca95..1dbd7732 100644
--- a/source/css/theme.css
+++ b/source/css/theme.css
@@ -268,7 +268,12 @@ h1 code, h2 code {
 
 pre {
   padding: 1em;
-  background: #000; }
+  background: #000;
+  border: 1px solid;
+  overflow: auto; }
+
+pre[class*=title-header] {
+  border: none; }
 
 /* Pandoc wraps pre[class*=sourceCode] in a div tag, so it is necessary to
 eliminate the margins of such pre tags to avoid too much spacing.*/
diff --git a/source/css/theme.scss b/source/css/theme.scss
index dfa1f8cd..387b4f00 100644
--- a/source/css/theme.scss
+++ b/source/css/theme.scss
@@ -386,6 +386,12 @@ h1 code, h2 code {
 pre {
     padding: 1em;
     background: #000;
+    border: 1px solid;
+    overflow: auto;
+}
+
+pre[class*=title-header] {
+  border: none;
 }
 
 /* Pandoc wraps pre[class*=sourceCode] in a div tag, so it is necessary to