diff --git a/www/code/mermaid.css b/www/code/mermaid.css
index 769933f0a..0802db0e0 100644
--- a/www/code/mermaid.css
+++ b/www/code/mermaid.css
@@ -121,6 +121,11 @@ text.actor {
   font-size: 11px;
   text-height: 14px;
 }
+.sectionTitle, .titleText {
+    font-weight: bold;
+    text-decoration: underline;
+}
+
 /* Grid and axis */
 .grid .tick {
   stroke: lightgrey;