diff --git a/themes/wporg-5ftf-2024/src/pledge-edit-button/style.scss b/themes/wporg-5ftf-2024/src/pledge-edit-button/style.scss
index a2b5518..ea4c438 100644
--- a/themes/wporg-5ftf-2024/src/pledge-edit-button/style.scss
+++ b/themes/wporg-5ftf-2024/src/pledge-edit-button/style.scss
@@ -47,7 +47,7 @@
 
 .pledge-dialog__background {
 	position: fixed;
-	z-index: 251;
+	z-index: 251; /* header + 1. */
 	top: 0;
 	left: 0;
 	bottom: 0;