diff --git a/wcs.css b/wcs.css
index ecdebbf..252a664 100644
--- a/wcs.css
+++ b/wcs.css
@@ -72,3 +72,10 @@ ul#evolutions li.msg-out div.msg {
 	margin-left: 20%;
 	background: #ddf;
 }
+
+span.required {
+	padding: 0 0 0 0px;
+	margin-left: 1ex;
+	overflow: hidden;
+	color: red;
+}