MOOC Student writes referring to a storymap exercise in Going Places with Spatial Analysis:
Screen resolution is ALWAYS two numbers -- horizontal x vertical -- so not sure what [...] your support people mean by a SINGLE number: "960 pixels" -- and I'm a former Ph.D.-level developer, so don't try to explain -- just have them see the link https://en.wikipedia.org/wiki/Graphics_display_resolution for bare bones basics before they edit the requirements page entry.)
960 pixels is the minimum width supported by the ArcGIS StoryMaps builder. We can update the documentation to make that clearer. Thanks for the feedback.