diff --git a/phpBB/styles/prosilver/theme/bidi.css b/phpBB/styles/prosilver/theme/bidi.css
index a63b591e0f..b07b6403f6 100644
--- a/phpBB/styles/prosilver/theme/bidi.css
+++ b/phpBB/styles/prosilver/theme/bidi.css
@@ -252,16 +252,6 @@
 	padding-left: 0;
 }
 
-*:first-child + html dl.details dd {
-	float: none;
-	margin-right: 30%;
-}
-
-* html dl.details dd {
-	float: none;
-	margin-right: 30%;
-}
-
 /* Pagination
 ---------------------------------------- */
 .rtl .pagination {