diff --git a/src/wp-admin/css/dashboard.css b/src/wp-admin/css/dashboard.css
index 5de0308846..5a11e1273b 100644
--- a/src/wp-admin/css/dashboard.css
+++ b/src/wp-admin/css/dashboard.css
@@ -155,7 +155,9 @@
 
 .welcome-panel-header-image {
 	position: absolute;
-	inset: -1rem var(--about-header-bg-offset-inline) 0 auto;
+	top: -1rem;
+	right: var(--about-header-bg-offset-inline);
+	bottom: 0;
 	width: var(--about-header-bg-width);
 	height: auto;
 }