Update 2 files

- /_layouts/post.html
- /_posts/2023-06-30-nucleic-acid.md

_layouts/post.html

@@ -27,7 +27,7 @@ if (daysold > 90) {
 
 <hr />
 
-{% include toc.html html=content sanitize=true %}
+{% include toc.html html=content sanitize=true h_max=3 %}
 
 {{content}}