finalized keycloak registration

src/main/resources/static/css/style.css

@@ -96,6 +96,10 @@ div {
 	/* 60 px is the current height of the headline; TODO: calculate it */
 }
 
+.acc_over {
+	background-image: linear-gradient(to bottom right, #ccc, #aaa) !important;
+}
+
 .acc_true {
 	background-image: linear-gradient(to bottom right, #cfc, #afa) !important;
 }