I'm testing my email which is built off of a previously working 2 column layout where the right column responsively drops below on mobile. The problem I'm having currently is the rendering of the email in Outlook, see screengrabs for what it looks like in Outlook (https://unitedasphalt.com/Email-Marketing/Troubleshooting/Outlook-Preview.png) and how it looks in Gmail (https://unitedasphalt.com/Email-Marketing/Troubleshooting/Gmail-Preview.png), how it is intended to look.

Thanks in advance for your assistance!