Hi @acdct
Thank you for posting your question in the community! Quick question. What email client or web-client are you using to view the email on Desktop?
Background images do not always render on different email clients based on how they render the email code. For example, Outlook is notorious for not rending background images.
Litmus has a great chart for what clients do and do not render background images.
https://www.litmus.com/blog/the-ultimate-guide-to-background-images-in-email
If you verified the client should render, then we can troubleshoot further, but from an initial guess, my suspicion is the email client doesn’t render the background image.
I hope this helps!
@In the Inbox