I really have tried to make this work just by following the instructions from the various articles about this subject, but I just cannot get image scaling to work in 120 DPI Outlook. I've set my tables and cells to either use relative widths, or to use styles for width instead of attributes. I've added the special XMLNS attributes to my html tag. I've placed the MSO conditional concerning PPI in my head. Despite those things being done, my images just do not scale. Below is a Litmus that includes my code and the previews

https://litmus.com/builder/56b8b6f

Is there a step I've missed? Something else I am supposed to do to make this work? Any help would be much appreciated, thank you.