Update 4 files

- /_layouts/default.html
- /_layouts/post.html
- /index.html
- /assets/css/style.scss

assets/css/style.scss

@@ -99,4 +99,12 @@ div.highlight button:active,
 div.highlight button:focus,
 div.highlight button:hover {
     opacity: 1
+}
+
+.footnotes {
+    font-size: 14px;
+    line-height: 1.4;
+}
+.footnotes p {
+    margin: 0;
 }