diff --git a/assets/css/theme-vars.css b/assets/css/theme-vars.css
index 47c061ce..347502f0 100644
--- a/assets/css/theme-vars.css
+++ b/assets/css/theme-vars.css
@@ -14,7 +14,7 @@
     --content: rgba(0, 0, 0, 0.88);
     --hljs-bg: #1c1d21;
     --code-bg: #f5f5f5;
-    --border: #eee
+    --border: #eee;
 }
 
 @media screen and (max-width:600px) {
@@ -32,7 +32,7 @@
     --content: rgba(255, 255, 255, 0.64);
     --hljs-bg: #2e2e33;
     --code-bg: #37383e;
-    --border: #5b5d67
+    --border: #333;
 }
 
 .list {