My partner and I are on two platforms. I am Windows 10, she is IOS.
I have formatted all my excel spreadsheets for efficient printing, however when she opens them and goes to print, they do not have my print formatting.

We share the sheets via Dropbox.
I store them there as Excel Workbook (.xlsx)
She goes into Dropbox and just clicks on the file to open. It displays it in 'excel' on her Macbook.
However, when she goes to print she has to re-do formating.

Should it not keep the formatting efforts that I did when I saved it?

Thanks for your help