Index: wp-admin/css/wp-admin-rtl.css
===================================================================
--- wp-admin/css/wp-admin-rtl.css	(revision 26749)
+++ wp-admin/css/wp-admin-rtl.css	(working copy)
@@ -12398,7 +12398,7 @@
 		display: block;
 		max-width: none;
 		box-sizing: border-box;
-		-mox-box-sizing: border-box;
+		-moz-box-sizing: border-box;
 	}
 
 	input[type=text].small-text,
@@ -12417,7 +12417,7 @@
 	#pass-strength-result {
 		width: 100%;
 		box-sizing: border-box;
-		-mox-box-sizing: border-box;
+		-moz-box-sizing: border-box;
 		padding: 8px;
 	}