diff --git a/src/themes/gantt.scss b/src/themes/gantt.scss
index 34da04050..b03ddd228 100644
--- a/src/themes/gantt.scss
+++ b/src/themes/gantt.scss
@@ -82,10 +82,12 @@
 
 .taskText {
   text-anchor: middle;
-  font-size: 11px;
   font-family: 'trebuchet ms', verdana, arial;
   font-family: var(--mermaid-font-family);
+}
 
+.taskText:not([font-size]) {
+  font-size: 11px;
 }
 
 .taskTextOutsideRight {