diff --git a/phpBB/styles/prosilver/theme/responsive.css b/phpBB/styles/prosilver/theme/responsive.css
index c8f487c45f..80e605df62 100644
--- a/phpBB/styles/prosilver/theme/responsive.css
+++ b/phpBB/styles/prosilver/theme/responsive.css
@@ -183,7 +183,7 @@
 		border: none;
 		border-radius: 0;
 		min-width: 390px;
-		margin: 0;
+		margin: 0 !important;
 		padding: 0 5px;
 	}