You can specify the order of properties by using the property order keyword. If no order is specified, some browsers may be inconsistent in the order in which they display properties in the content editing form. By specifying the
propertyOrder keyword, you can be sure that when a content producer is creating or updating content of this type in the content editing form, properties are displayed in your preferred order.
Specifying the property order is very simple. Here's how the order is specified in the tutorial banner sample.
"propertyOrder": [ "headline", "strapline", "background", "callToActionText", "callToActionUrl" ]