diff --git a/frontend/src/style.less b/frontend/src/style.less
index bdd6f324..9c930d4f 100644
--- a/frontend/src/style.less
+++ b/frontend/src/style.less
@@ -425,3 +425,7 @@ strong {
 .datetime-variables.datetime-variables {
   color: #3370ff;
 }
+
+.ed-tree-node__content {
+  border-radius: 4px;
+}
\ No newline at end of file