diff --git a/web/src/components/structured/structured.css b/web/src/components/structured/structured.css
index 4b33a0e..dfe34f1 100644
--- a/web/src/components/structured/structured.css
+++ b/web/src/components/structured/structured.css
@@ -726,7 +726,11 @@
 }
 
 .st-tool-group-title {
-  flex: 0 0 auto;
+  flex: 1 1 0;
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
   font-weight: 500;
 }