Have you ever tried to create two maps with the same extent? You line everything up on your monitor in the same place, use the same scale, and click Save. But when you open the two maps in another computer or app, or even add them to a web map that doesn’t sync the maps, the information you want highlighted in both is not displaying in the same location within the window. Argh!
Well, there’s an easy fix. You don’t have to write any code to fix your app, you don’t have to add tape to your monitor to ensure everything is aligned exactly the way you want. When you click Edit on the Details of your web map, a SET EXTENT button appears next to the Extent values. Click this button and manually edit the extents of each map. Voila! Both will align.