diff --git a/phpBB/adm/style/admin.css b/phpBB/adm/style/admin.css
index 7cf6c22236..cb0beb8db6 100644
--- a/phpBB/adm/style/admin.css
+++ b/phpBB/adm/style/admin.css
@@ -2049,6 +2049,8 @@ fieldset.permissions .padding {
 }
 
 .permissions-category ul {
+	display: flex;
+	flex-wrap: wrap;
 	margin: 0;
 	padding: 0;
 	list-style: none;
@@ -2102,7 +2104,6 @@ fieldset.permissions .padding {
 
 .permissions-category .activetab a span.tabbg {
 	background-position: 100% 0;
-	padding-bottom: 7px;
 	color: #333333;
 }
 
@@ -2297,6 +2298,10 @@ fieldset.permissions .padding {
 		margin: 0 !important;
 	}
 
+	.permissions-category ul {
+		display: block;
+	}
+
 	.permissions-category a, .permissions-category a span.tabbg {
 		display: block;
 		float: none !important;