Reduce margin below subsection

ksuess · ksuess · commit eb567868eadb · 2022-06-28T14:03:07.000+02:00
diff --git a/docs/_static/custom.css b/docs/_static/custom.css
@@ -106,6 +106,14 @@ div.section {
   margin-bottom: 5rem;
 }
 
+div.section div.section {
+  margin-bottom: 5rem;
+}
+
+div.section div.section div.section {
+  margin-bottom: 2rem;
+}
+
 /* admonitions */
 .admonition {
   border-radius: 0;
