diff -r 395df65f96ff -r 031b40cb87ac src/pyams_skin/resources/less/modal.less
--- a/src/pyams_skin/resources/less/modal.less	Tue Nov 15 10:40:48 2016 +0100
+++ b/src/pyams_skin/resources/less/modal.less	Tue Nov 15 16:16:17 2016 +0100
@@ -15,6 +15,12 @@
 		width: 98%;
 		max-width: 98%;
 	}
+	&.modal-xlarge {
+		@media only screen and (min-width: 768px) {
+			width: 95%;
+			max-width: 1000px;
+		}
+	}
 	&.modal-large {
 		@media only screen and (min-width: 768px) {
 			width: 80%;