diff --git a/static/css/blog/post.css b/static/css/blog/post.css
index cdc294b..774343c 100644
--- a/static/css/blog/post.css
+++ b/static/css/blog/post.css
@@ -198,8 +198,24 @@ table.hljs-ln {
   font-size: calc(var(--font-size) * 0.8);
 }
 
-/* Footnotes */
-.footnotes a {
+/* Footnote */
+section.footnotes * {
+  font-size: calc(var(--font-size) * 0.8);
+}
+
+/* When multiple ref */
+a.footnote-backref sup {
+  font-size: calc(var(--font-size) * 0.6);
+}
+a.footnote-backref sup::before {
+  content: "(";
+}
+a.footnote-backref sup::after {
+  content: ")";
+}
+
+/* Footnotes links */
+a.footnote-backref {
   font-family: "Segoe UI", "Segoe UI Symbol", system-ui;
   text-decoration: underline dotted;
 }