diff --git a/webclient/src/Style-light.css b/webclient/src/Style-light.css
index 9f4cc0f..42f6ee7 100644
--- a/webclient/src/Style-light.css
+++ b/webclient/src/Style-light.css
@@ -355,7 +355,8 @@ button.comment {
 	top: 0.2em;
 	width: 0.3rem;
 	height: 0.6rem;
-	border: solid #000;
+	border-style: solid;
+	border-color: #000;
 	border-width: 0 2px 2px 0;
 	transform: rotate(45deg);
 }