CJPM-17497: Added mid-size modal width class selector.

Author: joshhidley

packages/visual-stack/src/components/Modal.css

@@ -152,7 +152,7 @@
 
 @media (min-width: 768px) {
   .modal-dialog {
-    width: 400px;
+    width: 600px;
     margin: 30px auto;
   }
   .modal-content {
@@ -162,6 +162,9 @@
   .modal-sm {
     width: 300px;
   }
+  .modal-md {
+    width: 400px;
+  }
 }
 @media (min-width: 992px) {
   .modal-lg {