I am working on a project using Esri's Cascade Story Map app.
Within this, I am embedding web maps made using ArcGIS online. In these maps, I am trying to depict the continent of Africa, however none of the default zoom-levels in ArcGIS online are at a scale I want to use. Either they are too zoomed out, or too zoomed in. What I would like is an extent somewhere between the 3rd and 4th default zoom-levels.
Is there a way to set a custom scale to display my map at?
I have already tried changing the base map to a custom tile layer from Mapbox, however it seems that this did nothing to affect what zoom-level I can show.