diff --git a/assets/css/gist.css b/assets/css/gist.css
index d876222..55c4d27 100644
--- a/assets/css/gist.css
+++ b/assets/css/gist.css
@@ -1,3 +1,7 @@
+body .gist .gist-file {
+    border: 1px solid var(--border-color);
+}
+
 body .gist .highlight {
     background: var(--background);
 }