Email Rendering Issue with Columns on MAC Outlook App
I'm having an issue with a Marketo template (Default template: "Newsletter" > "Snowbunny") where my columns are coming across as stacked rather than horizontally oriented as they should. In my preview all looks fine and when testing/sending to PC accounts it's all fine but when rendered on a MAC in outlook all of the columns are stacking. Does anyone have any suggestions on what needs to be adjusted within the code (I've included below) in case anyone knows? Any suggestions would be much appreciated!
Screenshot on MAC:

Screenshot on PC/Marketo Preview:

Here is the template code:
codeshare.io/g868j8