Hi there,
This is Byron from the support team. I copied the code snippet you provided into the code editor in my workspace and sent a test to my mobile device and I wasn’t able to replicate the display issue you show in your screenshot. Which device and email client were you testing with?
Also, which editor are you using in Customer.io; Drag-and-drop, rich text, or code editor? If you’re using the code editor, there may be a conflict in your HTML/CSS and the HTML/CSS in the Typeform code and I would recommend testing using an empty layout and template to verify there are no conflicts in the code.