two column email displaying wrong in test

two column email displaying wrong in test

I have used a template toe create a two column email however when I run the test HTML the columns no longer appear side by side and my header no longer spans both columns.    It all appears correctly in Zoho.  

I am using Outlook to receive the email.

My account email is vi.kellersohn@oberontech.com
My campaign name is CIDM 2015 Forum fup email

Can you help me with this.