diff --git a/core/css/styles.scss b/core/css/styles.scss
index 667ca0dc2b..436d0ce115 100644
--- a/core/css/styles.scss
+++ b/core/css/styles.scss
@@ -992,6 +992,8 @@ code {
 	margin-top: 10px;
 	padding: 4px 8px;
 	width: auto;
+	border-radius: 3px;
+	border: none;
 
 	.ui-state-default,
 	.ui-widget-content .ui-state-default,