Index: lams_tool_larsrc/web/pages/learning/addurl.jsp
===================================================================
diff -u -r1ca8633aea1d461a727b7e31c4493a21bfdff073 -re3a1990532eb6f5524cd15ec1feec08131d9b3d2
--- lams_tool_larsrc/web/pages/learning/addurl.jsp	(.../addurl.jsp)	(revision 1ca8633aea1d461a727b7e31c4493a21bfdff073)
+++ lams_tool_larsrc/web/pages/learning/addurl.jsp	(.../addurl.jsp)	(revision e3a1990532eb6f5524cd15ec1feec08131d9b3d2)
@@ -86,8 +86,8 @@
 			$('#resourceItemForm').submit(submitResourceForm);
 			$('#resourceItemForm').validate({
 				ignore: 'hidden, div.cke_editable',
-				errorClass: "text-danger",
-				wrapper: "span",
+				validClass: "is-valid",
+			  	errorClass: 'is-invalid',
 				rules: {
 					url: {
 						required: true,